Calculus Volume 1
17th Edition
ISBN: 9781938168024
Author: Strang, Gilbert
Publisher: OpenStax College
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Textbook Question
Chapter 1.4, Problem 212E
For the following exercises, evaluate the functions. Give the exact value.
212.
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For unemployed persons in the United States, the average number of months of unemployment at the end of December 2009 was approximately seven months (Bureau of Labor Statistics, January 2010). Suppose the following data are for a particular region in upstate New York. The values in the first column show the number of
months unemployed and the values in the second column show the corresponding number of unemployed persons.
Months
Unemployed
Number
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1
1029
2
1686
3
2269
4
2675
5
3487
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4652
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4145
8
3587
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2325
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Let x be a random variable indicating the number of months a person is unemployed.
a. Use the data to develop an empirical discrete probability distribution for x (to 4 decimals).
(x)
f(x)
1
2
3
4
5
6
7
8
9
10
b. Show that your probability distribution satisfies the conditions for a valid discrete probability distribution.
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
blank
c. What is the probability that a…
West Virginia has one of the highest divorce rates in the nation, with an annual rate of approximately 5 divorces per 1000 people (Centers for Disease Control and Prevention website, January 12, 2012). The Marital Counseling Center, Inc. (MCC) thinks that the high divorce rate in the state may require them to hire additional staff.
Working with a consultant, the management of MCC has developed the following probability distribution for x = the number of new clients for marriage counseling for the next year.
Excel File: data05-19.xls
x
10
f(x)
.05
20
30
.10
.10
40
.20
50
60
.35
.20
a. Is this probability distribution valid?
- Select your answer-
Explain.
f(x)
Σf(x)
Select your answer
Select your answer
b. What is the probability MCC will obtain more than 30 new clients (to 2 decimals)?
c. What is the probability MCC will obtain fewer than 20 new clients (to 2 decimals)?
d. Compute the expected value and variance of x.
Expected value
Variance
clients per year
squared clients per year
For unemployed persons in the United States, the average number of months of unemployment at the end of December 2009 was approximately seven months (Bureau of Labor Statistics, January 2010). Suppose the following data are for a particular region in upstate New York. The values in the first column show the number of
months unemployed and the values in the second column show the corresponding number of unemployed persons.
Months
Unemployed
Number
Unemployed
1
1029
2
1686
3
2269
4
2675
5
3487
6
4652
7
4145
8
3587
9
2325
10
1120
Let x be a random variable indicating the number of months a person is unemployed.
a. Use the data to develop an empirical discrete probability distribution for x (to 4 decimals).
(x)
f(x)
1
2
3
4
5
6
7
8
9
10
b. Show that your probability distribution satisfies the conditions for a valid discrete probability distribution.
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
c. What is the probability that a person…
Chapter 1 Solutions
Calculus Volume 1
Ch. 1.1 - For the following exercises, (a) determine the...Ch. 1.1 - For the following exercises, (a) determine the...Ch. 1.1 - For the following exercises, (a) determine the...Ch. 1.1 - For the following exercises, (a) determine the...Ch. 1.1 - For the following exercises, (a) determine the...Ch. 1.1 - For the following exercises, (a) determine the...Ch. 1.1 - For the following exercises, find the values for...Ch. 1.1 - For the following exercises, find the values for...Ch. 1.1 - For the following exercises, find the values for...Ch. 1.1 - For the following exercises, find the values for...
Ch. 1.1 - For the following exercises, find the values for...Ch. 1.1 - For the following exercises, find the values for...Ch. 1.1 - For the following exercises, find the values for...Ch. 1.1 - For the following exercises, find the domain,...Ch. 1.1 - For the following exercises, find the domain,...Ch. 1.1 - For the following exercises, find the domain,...Ch. 1.1 - For the following exercises, find the domain,...Ch. 1.1 - For the following exercises, find the domain,...Ch. 1.1 - For the following exercises, find the domain,...Ch. 1.1 - For the following exercises, find the domain,...Ch. 1.1 - For the following exercises, find the domain,...Ch. 1.1 - For the following exercises, set up a table to...Ch. 1.1 - For the following exercises, set up a table to...Ch. 1.1 - For the following exercises, set up a table to...Ch. 1.1 - For the following exercises, set up a table to...Ch. 1.1 - For the following exercises, set up a table to...Ch. 1.1 - For the following exercises, set up a table to...Ch. 1.1 - For the following exercises, use the vertical line...Ch. 1.1 - For the following exercises, use the vertical line...Ch. 1.1 - For the following exercises, use the vertical line...Ch. 1.1 - For the following exercises, use the vertical line...Ch. 1.1 - For the following exercises, use the vertical line...Ch. 1.1 - For the following exercises, use the vertical line...Ch. 1.1 - For the following exercises, use the vertical line...Ch. 1.1 - For the following exercises, use the vertical line...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - For the following exercises, for each pair of...Ch. 1.1 - The table below lists the NBA championship winners...Ch. 1.1 - The area A of a square depends on the length of...Ch. 1.1 - [T] The volume of a cube depends on the length of...Ch. 1.1 - [T] A rental car company rents cars for a flat fee...Ch. 1.1 - [T] A vehicle has a 20-gal tank and gets 15 mpg....Ch. 1.1 - [T] The volume V of a sphere depends on the length...Ch. 1.1 - [T] A certain bacterium grows in culture in a...Ch. 1.1 - [T] An American tourist visits Paris and must...Ch. 1.1 - [T] The manager at a skateboard shop pays his...Ch. 1.1 - Use a graphing calculator to graph the half-circle...Ch. 1.2 - For the following exercises, for each pair of...Ch. 1.2 - For the following exercises, for each pair of...Ch. 1.2 - For the following exercises, for each pair of...Ch. 1.2 - For the following exercises, for each pair of...Ch. 1.2 - For the following exercises, for each pair of...Ch. 1.2 - For the following exercises, for each pair of...Ch. 1.2 - For the following exercises, for each pair of...Ch. 1.2 - For the following exercises, for each pair of...Ch. 1.2 - For the following exercises, write the equation of...Ch. 1.2 - For the following exercises, write the equation of...Ch. 1.2 - For the following exercises, write the equation of...Ch. 1.2 - For the following exercises, write the equation of...Ch. 1.2 - For the following exercises, write the equation of...Ch. 1.2 - For the following exercises, write the equation of...Ch. 1.2 - For the following exercises, write the equation of...Ch. 1.2 - For the following exercises, write the equation of...Ch. 1.2 - For the following exercises, for each linear...Ch. 1.2 - For the following exercises, for each linear...Ch. 1.2 - For the following exercises, for each linear...Ch. 1.2 - For the following exercises, for each linear...Ch. 1.2 - For the following exercises, for each linear...Ch. 1.2 - For the following exercises, for each linear...Ch. 1.2 - For the following exercises, for each linear...Ch. 1.2 - For the following exercises, for each linear...Ch. 1.2 - For the following exercises, for each polynomial,...Ch. 1.2 - For the following exercises, for each polynomial,...Ch. 1.2 - For the following exercises, for each polynomial,...Ch. 1.2 - For the following exercises, for each polynomial,...Ch. 1.2 - For the following exercises, for each polynomial,...Ch. 1.2 - For the following exercises, use the graph of...Ch. 1.2 - For the following exercises, use the graph of...Ch. 1.2 - For the following exercises, use the graph of...Ch. 1.2 - For the following exercises, use the graph of...Ch. 1.2 - For the following exercises, use the graph of...Ch. 1.2 - For the following exercises, use the graph of...Ch. 1.2 - For the following exercises, for each of the...Ch. 1.2 - For the following exercises, for each of the...Ch. 1.2 - For the following exercises, for each of the...Ch. 1.2 - For the following exercises, for each of the...Ch. 1.2 - For the following exercises, determine whether the...Ch. 1.2 - For the following exercises, determine whether the...Ch. 1.2 - For the following exercises, determine whether the...Ch. 1.2 - For the following exercises, determine whether the...Ch. 1.2 - For the following exercises, determine whether the...Ch. 1.2 - [T] A company purchases some computer equipment...Ch. 1.2 - [T] Total online shopping during the Christmas...Ch. 1.2 - [T] A family bakery makes cupcakes and sells them...Ch. 1.2 - [T] A house purchased for $250,000 is expected to...Ch. 1.2 - [T] A car was purchased for $26,000. The value of...Ch. 1.2 - [T] A condominium in an upscale part of the city...Ch. 1.2 - [T] The total cost C (in thousands of dollars) to...Ch. 1.2 - [T] A professor asks her class to report the...Ch. 1.2 - [T] The output (as a percent of total capacity) of...Ch. 1.2 - [T] The admissions office at a public university...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - For the following exercises, convert each angle in...Ch. 1.3 - Evaluate the following functional values. 123....Ch. 1.3 - Evaluate the following functional values. 124....Ch. 1.3 - Evaluate the following functional values. 125....Ch. 1.3 - Evaluate the following functional values. 126....Ch. 1.3 - Evaluate the following functional values. 127....Ch. 1.3 - Evaluate the following functional values. 128....Ch. 1.3 - For the following exercises, consider triangle...Ch. 1.3 - For the following exercises, consider triangle...Ch. 1.3 - For the following exercises, consider triangle...Ch. 1.3 - For the following exercises, consider triangle...Ch. 1.3 - For the following exercises, consider triangle...Ch. 1.3 - For the following exercises, consider triangle...Ch. 1.3 - For the following exercises, P is a point on the...Ch. 1.3 - For the following exercises, P is a point on the...Ch. 1.3 - For the following exercises, P is a point on the...Ch. 1.3 - For the following exercises, P is a point on the...Ch. 1.3 - For the following exercises, simplify each...Ch. 1.3 - For the following exercises, simplify each...Ch. 1.3 - For the following exercises, simplify each...Ch. 1.3 - For the following exercises, simplify each...Ch. 1.3 - For the following exercises, simplify each...Ch. 1.3 - For the following exercises, simplify each...Ch. 1.3 - For the following exercises, simplify each...Ch. 1.3 - For the following exercises, simplify each...Ch. 1.3 - For the following exercises, verify that each...Ch. 1.3 - For the following exercises, verify that each...Ch. 1.3 - For the following exercises, verify that each...Ch. 1.3 - For the following exercises, verify that each...Ch. 1.3 - For the following exercises, verify that each...Ch. 1.3 - For the following exercises, verify that each...Ch. 1.3 - For the following exercises, verify that each...Ch. 1.3 - For the following exercises, verify that each...Ch. 1.3 - For the following exercises, solve the...Ch. 1.3 - For the following exercises, solve the...Ch. 1.3 - For the following exercises, solve the...Ch. 1.3 - For the following exercises, solve the...Ch. 1.3 - For the following exercises, solve the...Ch. 1.3 - For the following exercises, solve the...Ch. 1.3 - For the following exercises, solve the...Ch. 1.3 - For the following exercises, solve the...Ch. 1.3 - For the following exercises, each graph is of the...Ch. 1.3 - For the following exercises, each graph is of the...Ch. 1.3 - For the following exercises, each graph is of the...Ch. 1.3 - For the following exercises, each graph is of the...Ch. 1.3 - For the following exercises, find a. the...Ch. 1.3 - For the following exercises, find a. the...Ch. 1.3 - For the following exercises, find a. the...Ch. 1.3 - For the following exercises, find a. the...Ch. 1.3 - For the following exercises, find a. the...Ch. 1.3 - For the following exercises, find a. the...Ch. 1.3 - [T] The diameter of a wheel rolling on the ground...Ch. 1.3 - [T] Find the length of the arc intercepted by...Ch. 1.3 - [T] As a point P moves around a circle, the...Ch. 1.3 - [T] A total of 250,000 m2 of land is needed to...Ch. 1.3 - [T] The area of an isosceles triangle with equal...Ch. 1.3 - [T] A panicle travels in a circular path at a...Ch. 1.3 - [T] An alternating current for outlets in a home...Ch. 1.3 - [T] The number of hours of daylight in a northeast...Ch. 1.3 - [T] Suppose that T=50+10sin[12(t8)] is a...Ch. 1.3 - [T] The function H(t)=8sin(6t) models the height H...Ch. 1.4 - Consider the graph in Figure 1.42 of the function...Ch. 1.4 - Now consider other graphs of the form...Ch. 1.4 - Repeat for A = 1, B = 2. Is there any relationship...Ch. 1.4 - Complete the following table, adding a few choices...Ch. 1.4 - 5. Try to figure out the formula for the y-values.Ch. 1.4 - 6. The formula for the x-values is a little...Ch. 1.4 - 7. If you found formulas for parts (5) and (6),...Ch. 1.4 - For the following exercises, use the horizontal...Ch. 1.4 - For the following exercises, use the horizontal...Ch. 1.4 - For the following exercises, use the horizontal...Ch. 1.4 - For the following exercises, use the horizontal...Ch. 1.4 - For the following exercises, use the horizontal...Ch. 1.4 - For the following exercises, use the horizontal...Ch. 1.4 - For the following exercises, a. find the inverse...Ch. 1.4 - For the following exercises, a. find the inverse...Ch. 1.4 - For the following exercises, a. find the inverse...Ch. 1.4 - For the following exercises, a. find the inverse...Ch. 1.4 - For the following exercises, a. find the inverse...Ch. 1.4 - For the following exercises, a. find the inverse...Ch. 1.4 - For the following exercises, use the graph of f...Ch. 1.4 - For the following exercises, use the graph of f...Ch. 1.4 - For the following exercises, use the graph of f...Ch. 1.4 - For the following exercises, use the graph of f to...Ch. 1.4 - For the following exercises, use composition to...Ch. 1.4 - For the following exercises, use composition to...Ch. 1.4 - For the following exercises, use composition to...Ch. 1.4 - For the following exercises, use composition to...Ch. 1.4 - For the following exercises, use composition to...Ch. 1.4 - For the following exercises, use composition to...Ch. 1.4 - For the following exercises, use composition to...Ch. 1.4 - For the following exercises, use composition to...Ch. 1.4 - For the following exercises, evaluate the...Ch. 1.4 - For the following exercises, evaluate the...Ch. 1.4 - For the following exercises, evaluate the...Ch. 1.4 - For the following exercises, evaluate the...Ch. 1.4 - For the following exercises, evaluate the...Ch. 1.4 - For the following exercises, evaluate the...Ch. 1.4 - For the following exercises, evaluate the...Ch. 1.4 - For the following exercises, evaluate the...Ch. 1.4 - For the following exercises, evaluate the...Ch. 1.4 - The function C=T(F)=(5/9)(F32) converts degrees...Ch. 1.4 - [T] The velocity V (in centimeters per second) of...Ch. 1.4 - A function that converts dress sizes in the United...Ch. 1.4 - [T] The cost to remove a toxin from a lake is...Ch. 1.4 - [T] A race car is accelerating at a velocity given...Ch. 1.4 - [T] An airplane’s Mach number M is the ratio of...Ch. 1.4 - [T] Using =2sin1(1M) , find the Mach number M for...Ch. 1.4 - [T] The temperature (in degrees Celsius) of a city...Ch. 1.4 - [T] The depth (in feet) of water at a dock changes...Ch. 1.4 - [T] All object moving in simple harmonic motion is...Ch. 1.4 - A local art gallery has a portrait 3 ft in height...Ch. 1.4 - [T] Use a calculator to evaluate...Ch. 1.4 - [T] Use a calculator to evaluate...Ch. 1.5 - For the following exercises, evaluate the given...Ch. 1.5 - For the following exercises, evaluate the given...Ch. 1.5 - For the following exercises, evaluate the given...Ch. 1.5 - For the following exercises, evaluate the given...Ch. 1.5 - For the following exercises, match the exponential...Ch. 1.5 - For the following exercises, match the exponential...Ch. 1.5 - For the following exercises, match the exponential...Ch. 1.5 - For the following exercises, match the exponential...Ch. 1.5 - For the following exercises, match the exponential...Ch. 1.5 - For the following exercises, match the exponential...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, write the equation in...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, sketch the graph of...Ch. 1.5 - For the following exercises, use properties of...Ch. 1.5 - For the following exercises, use properties of...Ch. 1.5 - For the following exercises, use properties of...Ch. 1.5 - For the following exercises, use properties of...Ch. 1.5 - For the following exercises, use properties of...Ch. 1.5 - For the following exercises, use properties of...Ch. 1.5 - For the following exercises, solve the exponential...Ch. 1.5 - For the following exercises, solve the exponential...Ch. 1.5 - For the following exercises, solve the exponential...Ch. 1.5 - For the following exercises, solve the exponential...Ch. 1.5 - For the following exercises, solve the exponential...Ch. 1.5 - For the following exercises, solve the exponential...Ch. 1.5 - For the following exercises, solve the exponential...Ch. 1.5 - For the following exercises, solve the exponential...Ch. 1.5 - For the following exercises, solve the logarithmic...Ch. 1.5 - For the following exercises, solve the logarithmic...Ch. 1.5 - For the following exercises, solve the logarithmic...Ch. 1.5 - For the following exercises, solve the logarithmic...Ch. 1.5 - For the following exercises, solve the logarithmic...Ch. 1.5 - For the following exercises, solve the logarithmic...Ch. 1.5 - For the following exercises, solve the logarithmic...Ch. 1.5 - For the following exercises, solve the logarithmic...Ch. 1.5 - For the following exercises, rise the...Ch. 1.5 - For the following exercises, rise the...Ch. 1.5 - For the following exercises, rise the...Ch. 1.5 - For the following exercises, rise the...Ch. 1.5 - For the following exercises, rise the...Ch. 1.5 - For the following exercises, rise the...Ch. 1.5 - Rewrite the following expressions in terms of...Ch. 1.5 - [T] The number of bacteria N in a culture after t...Ch. 1.5 - [T] The demand D (in millions of barrels) for oil...Ch. 1.5 - [T] The amount A of a $100,000 investment paying...Ch. 1.5 - [T] An investment is compounded monthly,...Ch. 1.5 - [T] The concentration of hydrogen ions in a...Ch. 1.5 - [T] Iodine-131 is a radioactive substance that...Ch. 1.5 - [T] According to the World Bank, at the end of...Ch. 1.5 - [T] The amount A accumulated after 1000 dollar’s...Ch. 1.5 - [T] A bacterial colony grown in a lab is known to...Ch. 1.5 - [T] The rabbit population on a game reserve...Ch. 1.5 - [T] The 1906 earthquake in Sail Francisco had a...Ch. 1 - True or False? Justify your answer with a proof or...Ch. 1 - True or False? Justify your answer with a proof or...Ch. 1 - True or False? Justify your answer with a proof or...Ch. 1 - True or False? Justify your answer with a proof or...Ch. 1 - For the following problems, state the domain and...Ch. 1 - For the following problems, state the domain and...Ch. 1 - For the following problems, state the domain and...Ch. 1 - For the following problems, state the domain and...Ch. 1 - Find the degree, y-intercept, and zeros for the...Ch. 1 - Find the degree, y-intercept, and zeros for the...Ch. 1 - Simplify the following trigonometric expressions....Ch. 1 - Simplify the following trigonometric expressions....Ch. 1 - Solve the following trigonometric equations on the...Ch. 1 - Solve the following trigonometric equations on the...Ch. 1 - Solve the following logarithmic equations. 324....Ch. 1 - wSolve the following logarithmic equations. 325....Ch. 1 - Are the following functions one-to-one over their...Ch. 1 - Are the following functions one-to-one over their...Ch. 1 - For the following problems, determine the largest...Ch. 1 - For the following problems, determine the largest...Ch. 1 - A car is racing along a circular track with...Ch. 1 - For the following problems, consider a restaurant...Ch. 1 - For the following problems, consider a restaurant...Ch. 1 - For the following problems, consider a restaurant...Ch. 1 - For the following problems, consider a restaurant...Ch. 1 - For the following problems, consider radioactive...Ch. 1 - For the following problems, consider radioactive...
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- In Gallup's Annual Consumption Habits Poll, telephone interviews were conducted for a random sample of 1014 adults aged 18 and over. One of the questions was "How many cups of coffee, if any, do you drink on an average day?" The following table shows the results obtained (Gallup website, August 6, 2012). Excel File: data05-23.xls Number of Cups per Day Number of Responses 0 365 264 193 3 4 or more 91 101 Define a random variable x = number of cups of coffee consumed on an average day. Let x = 4 represent four or more cups. Round your answers to four decimal places. a. Develop a probability distribution for x. x 0 1 2 3 4 f(x) b. Compute the expected value of x. cups of coffee c. Compute the variance of x. cups of coffee squared d. Suppose we are only interested in adults that drink at least one cup of coffee on an average day. For this group, let y = the number of cups of coffee consumed on an average day. Compute the expected value of y. Compare it to the expected value of x. The…arrow_forwardrounded to two decimal places at each calculationarrow_forwardIn Gallup's Annual Consumption Habits Poll, telephone interviews were conducted for a random sample of 1014 adults aged 18 and over. One of the questions was "How many cups of coffee, if any, do you drink on an average day?" The following table shows the results obtained (Gallup website, August 6, 2012). Excel File: data05-23.xls Number of Cups per Day Number of Responses 0 365 264 193 2 3 4 or more 91 101 Define a random variable x = number of cups of coffee consumed on an average day. Let x = 4 represent four or more cups. Round your answers to four decimal places. a. Develop a probability distribution for x. x 0 1 2 3 f(x) b. Compute the expected value of x. cups of coffee c. Compute the variance of x. cups of coffee squared d. Suppose we are only interested in adults that drink at least one cup of coffee on an average day. For this group, let y = the number of cups of coffee consumed on an average day. Compute the expected value of y. Compare it to the expected value of x. The…arrow_forward
- A technician services mailing machines at companies in the Phoenix area. Depending on the type of malfunction, the service call can take 1, 2, 3, or 4 hours. The different types of malfunctions occur at about the same frequency. Develop a probability distribution for the duration of a service call. Duration of Call x f(x) 1 2 3 4 Which of the following probability distribution graphs accurately represents the data set? Consider the required conditions for a discrete probability function, shown below.Does this probability distribution satisfy equation (5.1)?Does this probability distribution satisfy equation (5.2)? What is the probability a service call will take three hours? A service call has just come in, but the type of malfunction is unknown. It is 3:00 P.M. and service technicians usually get off at 5:00 P.M. What is the probability the service technician will have to work overtime to fix the machine today?arrow_forwardA psychologist determined that the number of sessions required to obtain the trust of a new patient is either 1, 2, or 3. Let x be a random variable indicating the number of sessions required to gain the patient's trust. The following probability function has been proposed. x f(x) for x = 1, 2, or 3 a. Consider the required conditions for a discrete probability function, shown below. f(x) ≥0 Σf(x) = 1 (5.1) (5.2) Does this probability distribution satisfy equation (5.1)? Select Does this probability distribution satisfy equation (5.2)? Select b. What is the probability that it takes exactly 2 sessions to gain the patient's trust (to 3 decimals)? c. What is the probability that it takes at least 2 sessions to gain the patient's trust (to 3 decimals)?arrow_forwardA technician services mailing machines at companies in the Phoenix area. Depending on the type of malfunction, the service call can take 1, 2, 3, or 4 hours. The different types of malfunctions occur at about the same frequency. Develop a probability distribution for the duration of a service call. Which of the following probability distribution graphs accurately represents the data set? Consider the required conditions for a discrete probability function, shown below.Does this probability distribution satisfy equation (5.1)?Does this probability distribution satisfy equation (5.2)? What is the probability a service call will take three hours? A service call has just come in, but the type of malfunction is unknown. It is 3:00 P.M. and service technicians usually get off at 5:00 P.M. What is the probability the service technician will have to work overtime to fix the machine today?arrow_forward
- West Virginia has one of the highest divorce rates in the nation, with an annual rate of approximately 5 divorces per 1000 people (Centers for Disease Control and Prevention website, January 12, 2012). The Marital Counseling Center, Inc. (MCC) thinks that the high divorce rate in the state may require them to hire additional staff. Working with a consultant, the management of MCC has developed the following probability distribution for x = the number of new clients for marriage counseling for the next year. Excel File: data05-19.xls 10 20 f(x) .05 .10 11 30 40 50 60 .10 .20 .35 .20 a. Is this probability distribution valid? Yes Explain. greater than or equal to 0 f(x) Σf(x) equal to 1 b. What is the probability MCC will obtain more than 30 new clients (to 2 decimals)? c. What is the probability MCC will obtain fewer than 20 new clients (to 2 decimals)? d. Compute the expected value and variance of x. Expected value Variance clients per year squared clients per yeararrow_forwardUse Variation of Parameters to solvearrow_forwardUse the method of washers to find the volume of the solid that is obtained when the region between the graphs f(x) = √√2 and g(x) = secx over the interval ≤x≤ is rotated about the x-axis.arrow_forward
- 5 Use the method of disks to find the volume of the solid that is obtained when the region under the curve y = over the interval [4,17] is rotated about the x-axis.arrow_forward3. Use the method of washers to find the volume of the solid that is obtained when the region between the graphs f(x) = √√2 and g(x) = secx over the interval ≤x≤ is rotated about the x-axis.arrow_forward4. Use cylindrical shells to find the volume of the solid generated when the region enclosed by the given curves is revolved about the x-axis. y = √√x, y = 0, y = √√3arrow_forward
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