WebAssign Printed Access Card for Aufmann/Lockwood/Nation/Clegg's Mathematical Excursions, 4th Edition, Single-Term
4th Edition
ISBN: 9781337652445
Author: Richard N. Aufmann, Joanne Lockwood, Richard D. Nation, Daniel K. Clegg
Publisher: Cengage Learning
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Chapter 10, Problem 72RE
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To find the distance (in parsecs) from Earth to the star. (Rounded to the nearest tenth.)
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Suppose the number of people who register to attend the Tucson Festival of Books can be modeled by P(t) = k(1.1),
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Which of the following represents how long it will take in days for the number of people who register to double?
t =
In(1.1)
In(2)
In(2)
t =
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t =
t =
In(2) - In(k)
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In(2) - In(k)
In(1.1)
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.
blank
c. What is the probability that a…
Chapter 10 Solutions
WebAssign Printed Access Card for Aufmann/Lockwood/Nation/Clegg's Mathematical Excursions, 4th Edition, Single-Term
Ch. 10.1 - Prob. 1EECh. 10.1 - Prob. 2EECh. 10.1 - Prob. 3EECh. 10.1 - Prob. 4EECh. 10.1 - Prob. 5EECh. 10.1 - Prob. 1ESCh. 10.1 - Prob. 2ESCh. 10.1 - Draw a line through all points with an...Ch. 10.1 - Draw a line through all points with an...Ch. 10.1 - Draw a line through all points with a y-coordinate...
Ch. 10.1 - Prob. 6ESCh. 10.1 - Graph the ordered-pair solutions of y=x2 when...Ch. 10.1 - Prob. 8ESCh. 10.1 - Prob. 9ESCh. 10.1 - Prob. 10ESCh. 10.1 - Graph the ordered-pair solutions of y=x32 when...Ch. 10.1 - Prob. 12ESCh. 10.1 - In Exercises 13 to 20, graph each equation. y=2x1Ch. 10.1 - Prob. 14ESCh. 10.1 - In Exercises 13 to 20, graph each equation....Ch. 10.1 - Prob. 16ESCh. 10.1 - Prob. 17ESCh. 10.1 - Prob. 18ESCh. 10.1 - Prob. 19ESCh. 10.1 - Prob. 20ESCh. 10.1 - Prob. 21ESCh. 10.1 - Prob. 22ESCh. 10.1 - Evaluate the function for the given value....Ch. 10.1 - Prob. 24ESCh. 10.1 - Prob. 25ESCh. 10.1 - Prob. 26ESCh. 10.1 - Prob. 27ESCh. 10.1 - Prob. 28ESCh. 10.1 - Sports The height h, in feet, of a ball that is...Ch. 10.1 - Prob. 30ESCh. 10.1 - Sound The speed s, in feet per second, of sound in...Ch. 10.1 - Prob. 32ESCh. 10.1 - Pendulums The time T in seconds, it takes a...Ch. 10.1 - Prob. 34ESCh. 10.1 - Prob. 35ESCh. 10.1 - Prob. 36ESCh. 10.1 - Prob. 37ESCh. 10.1 - Prob. 38ESCh. 10.1 - Prob. 39ESCh. 10.1 - Prob. 40ESCh. 10.1 - Graph the function. F(x)=12x+3Ch. 10.1 - Prob. 42ESCh. 10.1 - Graph the function. f(x)=x21Ch. 10.1 - Prob. 44ESCh. 10.1 - Graph the function. f(x)=x2+4Ch. 10.1 - Prob. 46ESCh. 10.1 - Prob. 47ESCh. 10.1 - Prob. 48ESCh. 10.1 - Prob. 49ESCh. 10.1 - Prob. 50ESCh. 10.1 - Prob. 51ESCh. 10.1 - Prob. 52ESCh. 10.1 - Prob. 53ESCh. 10.1 - Prob. 54ESCh. 10.1 - Prob. 55ESCh. 10.1 - Prob. 56ESCh. 10.2 - The graph at the left represents a car traveling...Ch. 10.2 - Prob. 2EECh. 10.2 - Prob. 3EECh. 10.2 - Prob. 4EECh. 10.2 - Prob. 5EECh. 10.2 - Prob. 6EECh. 10.2 - Prob. 7EECh. 10.2 - Prob. 8EECh. 10.2 - Prob. 9EECh. 10.2 - Prob. 10EECh. 10.2 - Prob. 11EECh. 10.2 - Prob. 1ESCh. 10.2 - Prob. 2ESCh. 10.2 - Prob. 3ESCh. 10.2 - Prob. 4ESCh. 10.2 - Find the x- and y-intercepts of thegraph of the...Ch. 10.2 - Prob. 6ESCh. 10.2 - Find the x- and y-intercepts of thegraph of the...Ch. 10.2 - Prob. 8ESCh. 10.2 - Prob. 9ESCh. 10.2 - Prob. 10ESCh. 10.2 - Prob. 11ESCh. 10.2 - Prob. 12ESCh. 10.2 - Prob. 13ESCh. 10.2 - Prob. 14ESCh. 10.2 - Prob. 15ESCh. 10.2 - Travel An approximate linear model that gives the...Ch. 10.2 - Refrigeration The temperature of an object taken...Ch. 10.2 - Retirement Account A retired biologist begins...Ch. 10.2 - Prob. 19ESCh. 10.2 - Prob. 20ESCh. 10.2 - Find the slope of the line containing the two...Ch. 10.2 - Prob. 22ESCh. 10.2 - Find the slope of the line containing the two...Ch. 10.2 - Prob. 24ESCh. 10.2 - Prob. 25ESCh. 10.2 - Prob. 26ESCh. 10.2 - Find the slope of the line containing the two...Ch. 10.2 - Prob. 28ESCh. 10.2 - Prob. 29ESCh. 10.2 - Prob. 30ESCh. 10.2 - Find the slope of the line containing the two...Ch. 10.2 - Prob. 32ESCh. 10.2 - Prob. 33ESCh. 10.2 - Prob. 34ESCh. 10.2 - Travel The graph below shows the relationship...Ch. 10.2 - Depreciation The graph below shows the...Ch. 10.2 - Prob. 37ESCh. 10.2 - Prob. 38ESCh. 10.2 - Panama Canal Ships in the Panama Canal are lowered...Ch. 10.2 - Prob. 40ESCh. 10.2 - Graph the line that passes through the point (2,3)...Ch. 10.2 - Prob. 42ESCh. 10.2 - Graph the line that passes through the point (2,...Ch. 10.2 - Prob. 44ESCh. 10.2 - Graph using the slope and y-intercept. f(x)=23x3Ch. 10.2 - Prob. 46ESCh. 10.2 - Graph using the slope and y-intercept. f(x)=34xCh. 10.2 - Prob. 48ESCh. 10.2 - Graph using the slope and y-intercept. f(x)=32x+6Ch. 10.2 - Prob. 50ESCh. 10.2 - Prob. 51ESCh. 10.2 - Prob. 52ESCh. 10.2 - Prob. 53ESCh. 10.2 - Prob. 54ESCh. 10.2 - Prob. 55ESCh. 10.2 - Prob. 56ESCh. 10.2 - Prob. 57ESCh. 10.2 - Construction When you climb a staircase, the flat...Ch. 10.3 - Write a linear function for the total cost C to...Ch. 10.3 - Write a linear function for the total revenue R...Ch. 10.3 - How many cartridges must the business restore and...Ch. 10.3 - Prob. 4EECh. 10.3 - Suppose the entrepreneurs are successful in their...Ch. 10.3 - Prob. 6EECh. 10.3 - Prob. 7EECh. 10.3 - Find the equation of the line that passes through...Ch. 10.3 - Prob. 2ESCh. 10.3 - Find the equation of the line that passes through...Ch. 10.3 - Prob. 4ESCh. 10.3 - Find the equation of the line that passes through...Ch. 10.3 - Prob. 6ESCh. 10.3 - Find the equation of the line that passes through...Ch. 10.3 - Prob. 8ESCh. 10.3 - Find the equation of the line that passes through...Ch. 10.3 - Prob. 10ESCh. 10.3 - Find the equation of the line that passes through...Ch. 10.3 - Prob. 12ESCh. 10.3 - Find the equation of the line that passes through...Ch. 10.3 - Prob. 14ESCh. 10.3 - Find the equation of the line that passes through...Ch. 10.3 - Prob. 16ESCh. 10.3 - Prob. 17ESCh. 10.3 - Prob. 18ESCh. 10.3 - Construction A general building contractor...Ch. 10.3 - Compensation An account executive receives a base...Ch. 10.3 - Car Sales A manufacturer of economy cars has...Ch. 10.3 - Calculator Sales A manufacturer of graphing...Ch. 10.3 - Test Scores The data in the table below show five...Ch. 10.3 - Prob. 24ESCh. 10.3 - Sports The data in the (able below show the amount...Ch. 10.3 - Prob. 26ESCh. 10.3 - Meteorology A meteorologist studied the maximum...Ch. 10.3 - Zoology A zoologist studied the running speeds of...Ch. 10.3 - Prob. 29ESCh. 10.3 - Prob. 30ESCh. 10.3 - Prob. 31ESCh. 10.3 - Prob. 32ESCh. 10.3 - Prob. 33ESCh. 10.3 - Prob. 34ESCh. 10.3 - Prob. 35ESCh. 10.4 - Find the coordinates of the focus for the parabola...Ch. 10.4 - Prob. 2EECh. 10.4 - Find a flashlight and measure the diameter of its...Ch. 10.4 - Find the vertex of the graph of the equation....Ch. 10.4 - Prob. 2ESCh. 10.4 - Prob. 3ESCh. 10.4 - Prob. 4ESCh. 10.4 - Prob. 5ESCh. 10.4 - Prob. 6ESCh. 10.4 - Find the vertex of the graph of the equation....Ch. 10.4 - Prob. 8ESCh. 10.4 - Find the vertex of the graph of the equation....Ch. 10.4 - Prob. 10ESCh. 10.4 - Find the vertex of the graph of the equation....Ch. 10.4 - Prob. 12ESCh. 10.4 - Prob. 13ESCh. 10.4 - Prob. 14ESCh. 10.4 - Prob. 15ESCh. 10.4 - Prob. 16ESCh. 10.4 - Prob. 17ESCh. 10.4 - Prob. 18ESCh. 10.4 - Find the x-intercepts of the parabola given by the...Ch. 10.4 - Prob. 20ESCh. 10.4 - Prob. 21ESCh. 10.4 - Prob. 22ESCh. 10.4 - Prob. 23ESCh. 10.4 - Prob. 24ESCh. 10.4 - Prob. 25ESCh. 10.4 - Prob. 26ESCh. 10.4 - Prob. 27ESCh. 10.4 - Prob. 28ESCh. 10.4 - Prob. 29ESCh. 10.4 - Prob. 30ESCh. 10.4 - Prob. 31ESCh. 10.4 - Prob. 32ESCh. 10.4 - The graph of which of the following equations is a...Ch. 10.4 - Sports The height s, in feet, of a ball thrown...Ch. 10.4 - Prob. 35ESCh. 10.4 - Prob. 36ESCh. 10.4 - Prob. 37ESCh. 10.4 - Water Treatment A pool is treated with a chemical...Ch. 10.4 - Civil Engineering The suspension cable that...Ch. 10.4 - Prob. 40ESCh. 10.4 - Pitching Karen is throwing an orange to her...Ch. 10.4 - Prob. 42ESCh. 10.4 - Prob. 43ESCh. 10.4 - Stopping Distance On wet concrete, the stopping...Ch. 10.4 - Prob. 45ESCh. 10.4 - Prob. 46ESCh. 10.4 - To prepare astronauts for the experience of zero...Ch. 10.5 - Prob. 1EECh. 10.5 - Prob. 2EECh. 10.5 - If all 64 squares of the chessboard are piled with...Ch. 10.5 - Prob. 4EECh. 10.5 - Prob. 5EECh. 10.5 - Prob. 1ESCh. 10.5 - Prob. 2ESCh. 10.5 - Prob. 3ESCh. 10.5 - Prob. 4ESCh. 10.5 - Prob. 5ESCh. 10.5 - Prob. 6ESCh. 10.5 - Prob. 7ESCh. 10.5 - Given f(x)=e2x, evaluate the following. Roundto...Ch. 10.5 - Prob. 9ESCh. 10.5 - Prob. 10ESCh. 10.5 - Prob. 11ESCh. 10.5 - Prob. 12ESCh. 10.5 - Prob. 13ESCh. 10.5 - Prob. 14ESCh. 10.5 - Prob. 15ESCh. 10.5 - Prob. 16ESCh. 10.5 - Prob. 17ESCh. 10.5 - Prob. 18ESCh. 10.5 - Prob. 19ESCh. 10.5 - Prob. 20ESCh. 10.5 - Prob. 21ESCh. 10.5 - Prob. 22ESCh. 10.5 - Prob. 23ESCh. 10.5 - Prob. 24ESCh. 10.5 - Investments Use the compound interest formula...Ch. 10.5 - Prob. 26ESCh. 10.5 - Prob. 27ESCh. 10.5 - Isotopes An isotope of technetium is used to...Ch. 10.5 - Isotopes lodine- 131 is an isotope that is used...Ch. 10.5 - Prob. 30ESCh. 10.5 - Music The concert A note on a piano is the firstA...Ch. 10.5 - Prob. 32ESCh. 10.5 - Prob. 33ESCh. 10.6 - Prob. 1EECh. 10.6 - Prob. 2EECh. 10.6 - Prob. 3EECh. 10.6 - Prob. 4EECh. 10.6 - Prob. 5EECh. 10.6 - Prob. 1ESCh. 10.6 - Prob. 2ESCh. 10.6 - Write the exponential equation in logarithmic...Ch. 10.6 - Prob. 4ESCh. 10.6 - Prob. 5ESCh. 10.6 - Prob. 6ESCh. 10.6 - Prob. 7ESCh. 10.6 - Prob. 8ESCh. 10.6 - Prob. 9ESCh. 10.6 - Prob. 10ESCh. 10.6 - Prob. 11ESCh. 10.6 - Prob. 12ESCh. 10.6 - Prob. 13ESCh. 10.6 - Prob. 14ESCh. 10.6 - Prob. 15ESCh. 10.6 - Prob. 16ESCh. 10.6 - Prob. 17ESCh. 10.6 - Prob. 18ESCh. 10.6 - Evaluate the logarithm. log100Ch. 10.6 - Prob. 20ESCh. 10.6 - Prob. 21ESCh. 10.6 - Prob. 22ESCh. 10.6 - Prob. 23ESCh. 10.6 - Prob. 24ESCh. 10.6 - Prob. 25ESCh. 10.6 - Prob. 26ESCh. 10.6 - Prob. 27ESCh. 10.6 - Solve the equation for x. log8x=2Ch. 10.6 - Prob. 29ESCh. 10.6 - Prob. 30ESCh. 10.6 - Prob. 31ESCh. 10.6 - Prob. 32ESCh. 10.6 - Prob. 33ESCh. 10.6 - Prob. 34ESCh. 10.6 - Prob. 35ESCh. 10.6 - Prob. 36ESCh. 10.6 - Prob. 37ESCh. 10.6 - Prob. 38ESCh. 10.6 - Prob. 39ESCh. 10.6 - Prob. 40ESCh. 10.6 - Prob. 41ESCh. 10.6 - Prob. 42ESCh. 10.6 - Prob. 43ESCh. 10.6 - Prob. 44ESCh. 10.6 - Prob. 45ESCh. 10.6 - Prob. 46ESCh. 10.6 - Light The percent of light that will pass through...Ch. 10.6 - Light The percent of light that will pass through...Ch. 10.6 - Sound The number of decibels, D, of a sound can be...Ch. 10.6 - Prob. 50ESCh. 10.6 - Prob. 51ESCh. 10.6 - Prob. 52ESCh. 10.6 - Prob. 53ESCh. 10.6 - Prob. 54ESCh. 10.6 - Prob. 55ESCh. 10.6 - Earthquakes. Use the Richter scale equation...Ch. 10.6 - Prob. 57ESCh. 10.6 - Prob. 58ESCh. 10.6 - Prob. 59ESCh. 10.6 - Prob. 60ESCh. 10.6 - Prob. 61ESCh. 10.6 - Prob. 62ESCh. 10.6 - Prob. 63ESCh. 10.6 - Prob. 64ESCh. 10.6 - Prob. 65ESCh. 10 - Draw a line through all points with an...Ch. 10 - Draw a line through all points with y-coordinate...Ch. 10 - Prob. 3RECh. 10 - Prob. 4RECh. 10 - Prob. 5RECh. 10 - Prob. 6RECh. 10 - Prob. 7RECh. 10 - Prob. 8RECh. 10 - Prob. 9RECh. 10 - Prob. 10RECh. 10 - Prob. 11RECh. 10 - Prob. 12RECh. 10 - Prob. 13RECh. 10 - Prob. 14RECh. 10 - Prob. 15RECh. 10 - Prob. 16RECh. 10 - Prob. 17RECh. 10 - Prob. 18RECh. 10 - Prob. 19RECh. 10 - Prob. 20RECh. 10 - Prob. 21RECh. 10 - Prob. 22RECh. 10 - Prob. 23RECh. 10 - Prob. 24RECh. 10 - Prob. 25RECh. 10 - Mixtures The percent concentration P of sugar in a...Ch. 10 - Prob. 27RECh. 10 - Prob. 28RECh. 10 - Prob. 29RECh. 10 - Prob. 30RECh. 10 - Prob. 31RECh. 10 - Prob. 32RECh. 10 - Find the slope of the line containing the given...Ch. 10 - Prob. 34RECh. 10 - Prob. 35RECh. 10 - Fuel Consumption The graph below shows how the...Ch. 10 - Prob. 37RECh. 10 - Prob. 38RECh. 10 - Prob. 39RECh. 10 - Prob. 40RECh. 10 - Prob. 41RECh. 10 - Prob. 42RECh. 10 - Prob. 43RECh. 10 - Prob. 44RECh. 10 - Gasoline Sales The manager of Valley Gas Mart has...Ch. 10 - Prob. 46RECh. 10 - Prob. 47RECh. 10 - Prob. 48RECh. 10 - Prob. 49RECh. 10 - Prob. 50RECh. 10 - Prob. 51RECh. 10 - Prob. 52RECh. 10 - Prob. 53RECh. 10 - Prob. 54RECh. 10 - Find the minimum or maximum value of the quadratic...Ch. 10 - Prob. 56RECh. 10 - Prob. 57RECh. 10 - Prob. 58RECh. 10 - Prob. 59RECh. 10 - Prob. 60RECh. 10 - Isotopes An isotope of technetium has a half-life...Ch. 10 - Prob. 62RECh. 10 - Golf A golf ball is dropped from a height of 6 ft....Ch. 10 - Evaluate the logarithm. log3243Ch. 10 - Prob. 65RECh. 10 - Prob. 66RECh. 10 - Prob. 67RECh. 10 - Prob. 68RECh. 10 - Prob. 69RECh. 10 - Prob. 70RECh. 10 - Prob. 71RECh. 10 - Prob. 72RECh. 10 - Sound The number of decibels, D, of a sound can be...Ch. 10 - Prob. 1TCh. 10 - Prob. 2TCh. 10 - Prob. 3TCh. 10 - Prob. 4TCh. 10 - Prob. 5TCh. 10 - Prob. 6TCh. 10 - Prob. 7TCh. 10 - Prob. 8TCh. 10 - Prob. 9TCh. 10 - Prob. 10TCh. 10 - Prob. 11TCh. 10 - Prob. 12TCh. 10 - Prob. 13TCh. 10 - Prob. 14TCh. 10 - Sports The height h. in feet, of a ball that is...Ch. 10 - Prob. 16TCh. 10 - Prob. 17TCh. 10 - Prob. 18TCh. 10 - A traffic engineer gathered data on the number of...Ch. 10 - Prob. 20T
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- 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 yeararrow_forwardFor 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…arrow_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 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_forward
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