Basic Technical Mathematics
11th Edition
ISBN: 9780134437705
Author: Washington
Publisher: PEARSON
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Chapter 21.11, Problem 3E
To determine
To plot: The curve for polar coordinate equation
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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),
where t is the number of days since the registration window opened. Assume k is a positive constant.
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 =
In(1.1)
In(1.1)
t =
t =
t =
In(2) - In(k)
In(2)
In(k) + In(1.1)
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…
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
Chapter 21 Solutions
Basic Technical Mathematics
Ch. 21.1 - Find the distance between (−2, 6) and (5, −3).
Ch. 21.1 - Prob. 2PECh. 21.1 - Prob. 1ECh. 21.1 - Prob. 2ECh. 21.1 - Prob. 5ECh. 21.1 - In Exercises 5–14, find the distance between the...Ch. 21.1 - Prob. 7ECh. 21.1 - Prob. 8ECh. 21.1 - Prob. 9ECh. 21.1 - Prob. 10E
Ch. 21.1 - Prob. 11ECh. 21.1 - Prob. 12ECh. 21.1 - Prob. 13ECh. 21.1 - Prob. 14ECh. 21.1 - Prob. 15ECh. 21.1 - In Exercises 15–24, find the slopes of the lines...Ch. 21.1 - Prob. 17ECh. 21.1 - Prob. 18ECh. 21.1 - Prob. 19ECh. 21.1 - Prob. 20ECh. 21.1 - In Exercises 15–24, find the slopes of the lines...Ch. 21.1 - Prob. 22ECh. 21.1 - Prob. 23ECh. 21.1 - Prob. 24ECh. 21.1 - Prob. 25ECh. 21.1 - In Exercises 25–28, find the slopes of the lines...Ch. 21.1 - In Exercises 25–28, find the slopes of the lines...Ch. 21.1 - Prob. 28ECh. 21.1 - Prob. 29ECh. 21.1 - Prob. 30ECh. 21.1 - Prob. 31ECh. 21.1 - Prob. 32ECh. 21.1 - Prob. 33ECh. 21.1 - In Exercises 33–36, determine whether the lines...Ch. 21.1 - Prob. 35ECh. 21.1 - Prob. 36ECh. 21.1 - Prob. 37ECh. 21.1 - Prob. 38ECh. 21.1 - Prob. 39ECh. 21.1 - Prob. 40ECh. 21.1 - Prob. 41ECh. 21.1 - Prob. 42ECh. 21.1 - Prob. 43ECh. 21.1 - Prob. 44ECh. 21.1 - Prob. 45ECh. 21.1 - Prob. 46ECh. 21.1 - Prob. 47ECh. 21.1 - Prob. 48ECh. 21.1 - Prob. 49ECh. 21.1 - Prob. 50ECh. 21.1 - Prob. 51ECh. 21.1 - Prob. 52ECh. 21.1 - Prob. 53ECh. 21.1 - Prob. 54ECh. 21.1 - Prob. 55ECh. 21.1 - Prob. 56ECh. 21.1 - Prob. 57ECh. 21.1 - Prob. 58ECh. 21.1 - Prob. 59ECh. 21.1 - Prob. 60ECh. 21.1 - Prob. 61ECh. 21.1 - In Exercises 53–66, solve the given...Ch. 21.1 - Prob. 63ECh. 21.1 - Prob. 64ECh. 21.1 - Prob. 65ECh. 21.1 - Prob. 66ECh. 21.2 - Find the equation of the straight line that passes...Ch. 21.2 - Prob. 2PECh. 21.2 - Prob. 3PECh. 21.2 - Prob. 1ECh. 21.2 - Prob. 2ECh. 21.2 - Prob. 3ECh. 21.2 - Prob. 4ECh. 21.2 - Prob. 5ECh. 21.2 - Prob. 6ECh. 21.2 - Prob. 7ECh. 21.2 - Prob. 8ECh. 21.2 - Prob. 9ECh. 21.2 - Prob. 10ECh. 21.2 - Prob. 11ECh. 21.2 - Prob. 12ECh. 21.2 - Prob. 13ECh. 21.2 - Prob. 14ECh. 21.2 - Prob. 15ECh. 21.2 - In Exercises 5–20, find the equation of each of...Ch. 21.2 - In Exercises 5–20, find the equation of each of...Ch. 21.2 - Prob. 18ECh. 21.2 - Prob. 19ECh. 21.2 - Prob. 20ECh. 21.2 - Prob. 21ECh. 21.2 - In Exercises 21–28, reduce the equations to...Ch. 21.2 - In Exercises 21–28, reduce the equations to...Ch. 21.2 - Prob. 24ECh. 21.2 - Prob. 25ECh. 21.2 - Prob. 26ECh. 21.2 - Prob. 27ECh. 21.2 - Prob. 28ECh. 21.2 - Prob. 29ECh. 21.2 - In Exercises 29–36, determine whether the given...Ch. 21.2 - Prob. 31ECh. 21.2 - Prob. 32ECh. 21.2 - Prob. 33ECh. 21.2 - Prob. 34ECh. 21.2 - Prob. 35ECh. 21.2 - Prob. 36ECh. 21.2 - Prob. 37ECh. 21.2 - Prob. 38ECh. 21.2 - Prob. 39ECh. 21.2 - Prob. 40ECh. 21.2 - Prob. 41ECh. 21.2 - Prob. 42ECh. 21.2 - Prob. 43ECh. 21.2 - Prob. 44ECh. 21.2 - Prob. 45ECh. 21.2 - Prob. 46ECh. 21.2 - Prob. 47ECh. 21.2 - Prob. 48ECh. 21.2 - Prob. 49ECh. 21.2 - Prob. 50ECh. 21.2 - Prob. 51ECh. 21.2 - Prob. 52ECh. 21.2 - Prob. 53ECh. 21.2 - Prob. 54ECh. 21.2 - Prob. 55ECh. 21.2 - Prob. 56ECh. 21.2 - Prob. 57ECh. 21.2 - Prob. 58ECh. 21.2 -
A light beam is reflected off the edge of an...Ch. 21.2 - Prob. 60ECh. 21.2 - Prob. 61ECh. 21.2 - Prob. 62ECh. 21.2 - Prob. 63ECh. 21.2 - Prob. 64ECh. 21.2 - Prob. 65ECh. 21.2 - Prob. 66ECh. 21.2 - Prob. 67ECh. 21.2 - Prob. 68ECh. 21.3 - Prob. 1PECh. 21.3 - Prob. 2PECh. 21.3 - Prob. 3PECh. 21.3 - Prob. 1ECh. 21.3 - Prob. 2ECh. 21.3 - Prob. 3ECh. 21.3 - Prob. 4ECh. 21.3 - Prob. 5ECh. 21.3 - Prob. 6ECh. 21.3 - Prob. 7ECh. 21.3 - Prob. 8ECh. 21.3 - Prob. 9ECh. 21.3 - Prob. 10ECh. 21.3 - Prob. 11ECh. 21.3 - Prob. 12ECh. 21.3 - Prob. 13ECh. 21.3 - Prob. 14ECh. 21.3 - Prob. 15ECh. 21.3 - Prob. 16ECh. 21.3 - Prob. 17ECh. 21.3 - Prob. 18ECh. 21.3 - Prob. 19ECh. 21.3 - Prob. 20ECh. 21.3 - Prob. 21ECh. 21.3 - Prob. 22ECh. 21.3 - Prob. 23ECh. 21.3 - Prob. 24ECh. 21.3 - Prob. 25ECh. 21.3 - In Exercises 25–36, determine the center and...Ch. 21.3 - Prob. 27ECh. 21.3 - Prob. 28ECh. 21.3 - Prob. 29ECh. 21.3 - Prob. 30ECh. 21.3 - Prob. 31ECh. 21.3 - Prob. 32ECh. 21.3 - Prob. 33ECh. 21.3 - Prob. 34ECh. 21.3 - Prob. 35ECh. 21.3 - Prob. 36ECh. 21.3 - Prob. 37ECh. 21.3 - Prob. 38ECh. 21.3 - Prob. 39ECh. 21.3 - Prob. 40ECh. 21.3 - Prob. 41ECh. 21.3 - Prob. 42ECh. 21.3 - Prob. 43ECh. 21.3 - Prob. 44ECh. 21.3 - Prob. 45ECh. 21.3 - Prob. 46ECh. 21.3 - Prob. 47ECh. 21.3 - Prob. 48ECh. 21.3 - Prob. 49ECh. 21.3 - In Exercises 41–68, solve the given problems.
When...Ch. 21.3 - Prob. 51ECh. 21.3 - In Exercises 41–68, solve the given problems.
Use...Ch. 21.3 - In Exercises 41–68, solve the given problems.
What...Ch. 21.3 - In Exercises 41–68, solve the given problems.
What...Ch. 21.3 - In Exercises 41–68, solve the given problems.
Is...Ch. 21.3 - In Exercises 41–68, solve the given problems.
Find...Ch. 21.3 - In Exercises 41–68, solve the given problems.
For...Ch. 21.3 - Prob. 58ECh. 21.3 - Prob. 59ECh. 21.3 - Prob. 60ECh. 21.3 - In Exercises 41–68, solve the given problems.
In a...Ch. 21.3 - Prob. 62ECh. 21.3 - Prob. 63ECh. 21.3 - Prob. 64ECh. 21.3 - Find the equation describing the rim of a circular...Ch. 21.3 - Prob. 66ECh. 21.3 - Prob. 67ECh. 21.3 - Prob. 68ECh. 21.4 - Find the coordinates of the focus and the equation...Ch. 21.4 - Prob. 2PECh. 21.4 - Prob. 1ECh. 21.4 - Prob. 2ECh. 21.4 - Prob. 3ECh. 21.4 - Prob. 4ECh. 21.4 - Prob. 5ECh. 21.4 - Prob. 6ECh. 21.4 - Prob. 7ECh. 21.4 - In Exercises 5–16, determine the coordinates of...Ch. 21.4 - Prob. 9ECh. 21.4 - Prob. 10ECh. 21.4 - Prob. 11ECh. 21.4 - Prob. 12ECh. 21.4 - Prob. 13ECh. 21.4 - Prob. 14ECh. 21.4 - Prob. 15ECh. 21.4 - Prob. 16ECh. 21.4 - Prob. 17ECh. 21.4 - Prob. 18ECh. 21.4 - Prob. 19ECh. 21.4 - Prob. 20ECh. 21.4 - Prob. 21ECh. 21.4 - Prob. 22ECh. 21.4 - Prob. 23ECh. 21.4 - Prob. 24ECh. 21.4 - Prob. 25ECh. 21.4 - Prob. 26ECh. 21.4 - Prob. 27ECh. 21.4 - Prob. 28ECh. 21.4 - Prob. 29ECh. 21.4 - Prob. 30ECh. 21.4 - Prob. 31ECh. 21.4 - Prob. 32ECh. 21.4 - In Exercises 31–58, solve the given problems.
Find...Ch. 21.4 - Prob. 34ECh. 21.4 - Prob. 35ECh. 21.4 - Prob. 36ECh. 21.4 - Prob. 37ECh. 21.4 - Prob. 38ECh. 21.4 - Prob. 39ECh. 21.4 - Prob. 40ECh. 21.4 - Prob. 41ECh. 21.4 - Prob. 43ECh. 21.4 - Prob. 44ECh. 21.4 - Prob. 45ECh. 21.4 - Prob. 46ECh. 21.4 - Prob. 48ECh. 21.4 - Prob. 49ECh. 21.4 - Prob. 50ECh. 21.4 - Prob. 51ECh. 21.4 - Prob. 52ECh. 21.4 - Prob. 53ECh. 21.4 - Prob. 54ECh. 21.4 - Prob. 55ECh. 21.4 - Prob. 56ECh. 21.4 - Prob. 57ECh. 21.4 - Prob. 58ECh. 21.5 - Find the vertices and foci of each ellipse.
Ch. 21.5 - Prob. 2PECh. 21.5 - Prob. 3PECh. 21.5 - Prob. 1ECh. 21.5 - Prob. 2ECh. 21.5 - Prob. 3ECh. 21.5 - Prob. 4ECh. 21.5 - Prob. 5ECh. 21.5 - In Exercises 3–16, find the coordinates of the...Ch. 21.5 - Prob. 7ECh. 21.5 - Prob. 8ECh. 21.5 - Prob. 9ECh. 21.5 - Prob. 10ECh. 21.5 - Prob. 11ECh. 21.5 - Prob. 12ECh. 21.5 - Prob. 13ECh. 21.5 - Prob. 14ECh. 21.5 - Prob. 15ECh. 21.5 - Prob. 16ECh. 21.5 - In Exercises 17–28, find the equations of the...Ch. 21.5 - Prob. 18ECh. 21.5 - Prob. 19ECh. 21.5 - Prob. 20ECh. 21.5 - Prob. 21ECh. 21.5 - Prob. 22ECh. 21.5 - Prob. 23ECh. 21.5 - Prob. 24ECh. 21.5 - Prob. 25ECh. 21.5 - In Exercises 17–28, find the equations of the...Ch. 21.5 - Prob. 27ECh. 21.5 - Prob. 28ECh. 21.5 - Prob. 29ECh. 21.5 - Prob. 30ECh. 21.5 - Prob. 31ECh. 21.5 - Prob. 32ECh. 21.5 - Prob. 33ECh. 21.5 - Prob. 34ECh. 21.5 - Prob. 35ECh. 21.5 - In Exercises 29–56, solve the given problems.
36....Ch. 21.5 - Prob. 37ECh. 21.5 - Prob. 38ECh. 21.5 - Prob. 39ECh. 21.5 - Prob. 40ECh. 21.5 - In Exercises 29–56, solve the given problems.
41....Ch. 21.5 - Prob. 42ECh. 21.5 - Prob. 43ECh. 21.5 - Prob. 44ECh. 21.5 - Prob. 45ECh. 21.5 - Prob. 46ECh. 21.5 - In Exercises 29–56, solve the given...Ch. 21.5 - Prob. 48ECh. 21.5 - In Exercises 29–56, solve the given...Ch. 21.5 - In Exercises 29–56, solve the given...Ch. 21.5 - In Exercises 29–56, solve the given...Ch. 21.5 - In Exercises 29–56, solve the given...Ch. 21.5 - In Exercises 29–56, solve the given...Ch. 21.5 - In Exercises 29–56, solve the given...Ch. 21.5 - In Exercises 29–56, solve the given...Ch. 21.5 - In Exercises 29–56, solve the given...Ch. 21.6 - Find the vertices and foci of each hyperbola.
Ch. 21.6 - Prob. 2PECh. 21.6 - Prob. 3PECh. 21.6 - Prob. 1ECh. 21.6 - Prob. 2ECh. 21.6 - Prob. 3ECh. 21.6 - Prob. 4ECh. 21.6 - Prob. 5ECh. 21.6 - In Exercises 3–16, find the coordinates of the...Ch. 21.6 - Prob. 7ECh. 21.6 - Prob. 8ECh. 21.6 - Prob. 9ECh. 21.6 - Prob. 10ECh. 21.6 - Prob. 11ECh. 21.6 - In Exercises 3–16, find the coordinates of the...Ch. 21.6 - Prob. 13ECh. 21.6 - Prob. 14ECh. 21.6 - Prob. 15ECh. 21.6 - Prob. 16ECh. 21.6 - Prob. 17ECh. 21.6 - Prob. 18ECh. 21.6 - Prob. 19ECh. 21.6 - Prob. 20ECh. 21.6 - Prob. 21ECh. 21.6 - Prob. 22ECh. 21.6 - Prob. 23ECh. 21.6 - Prob. 24ECh. 21.6 - Prob. 25ECh. 21.6 - Prob. 26ECh. 21.6 - Prob. 27ECh. 21.6 - Prob. 28ECh. 21.6 - Prob. 29ECh. 21.6 - Prob. 30ECh. 21.6 - Prob. 31ECh. 21.6 - Prob. 32ECh. 21.6 - Prob. 33ECh. 21.6 - Prob. 34ECh. 21.6 - Prob. 35ECh. 21.6 - Prob. 36ECh. 21.6 - Prob. 37ECh. 21.6 - Prob. 38ECh. 21.6 - Prob. 39ECh. 21.6 - Prob. 40ECh. 21.6 - Prob. 41ECh. 21.6 - Prob. 42ECh. 21.6 - Prob. 43ECh. 21.6 - Prob. 44ECh. 21.6 - Prob. 45ECh. 21.6 - Prob. 46ECh. 21.6 - Prob. 47ECh. 21.6 - Prob. 48ECh. 21.6 - Prob. 49ECh. 21.6 - In Exercises 29–54, solve the given...Ch. 21.6 - In Exercises 29–54, solve the given...Ch. 21.6 - In Exercises 29–54, solve the given...Ch. 21.6 - In Exercises 29–54, solve the given...Ch. 21.6 - Prob. 54ECh. 21.7 - Find the center and foci of ellipse
.
Ch. 21.7 - Prob. 1ECh. 21.7 - Prob. 2ECh. 21.7 - Prob. 3ECh. 21.7 - In Exercises 3–10, describe the curve represented...Ch. 21.7 - Prob. 5ECh. 21.7 - Prob. 6ECh. 21.7 - Prob. 7ECh. 21.7 - In Exercises 3–10, describe the curve represented...Ch. 21.7 - In Exercises 3–10, describe the curve represented...Ch. 21.7 - Prob. 10ECh. 21.7 - Prob. 11ECh. 21.7 - Prob. 12ECh. 21.7 - Prob. 13ECh. 21.7 - Prob. 14ECh. 21.7 - Prob. 15ECh. 21.7 - Prob. 16ECh. 21.7 - Prob. 17ECh. 21.7 - Prob. 18ECh. 21.7 - Prob. 19ECh. 21.7 - Prob. 20ECh. 21.7 - Prob. 21ECh. 21.7 - Prob. 22ECh. 21.7 - Prob. 23ECh. 21.7 - Prob. 24ECh. 21.7 - Prob. 25ECh. 21.7 - Prob. 26ECh. 21.7 - Prob. 27ECh. 21.7 - Prob. 28ECh. 21.7 - Prob. 29ECh. 21.7 - Prob. 30ECh. 21.7 - Prob. 31ECh. 21.7 - Prob. 32ECh. 21.7 - Prob. 33ECh. 21.7 - Prob. 34ECh. 21.7 - Prob. 35ECh. 21.7 - Prob. 36ECh. 21.7 - Prob. 37ECh. 21.7 - Prob. 38ECh. 21.7 - Prob. 39ECh. 21.7 - Prob. 40ECh. 21.7 - Prob. 41ECh. 21.7 - Prob. 42ECh. 21.7 - Prob. 43ECh. 21.7 - Prob. 44ECh. 21.7 - Prob. 45ECh. 21.7 - Prob. 46ECh. 21.7 - Prob. 47ECh. 21.7 - Prob. 48ECh. 21.7 - Prob. 49ECh. 21.7 - Prob. 50ECh. 21.7 - Prob. 51ECh. 21.7 - Prob. 52ECh. 21.7 - Prob. 53ECh. 21.7 - Prob. 54ECh. 21.8 - Identify the type of curve represented by each...Ch. 21.8 - Prob. 2PECh. 21.8 - Prob. 1ECh. 21.8 - Prob. 2ECh. 21.8 - Prob. 3ECh. 21.8 - Prob. 4ECh. 21.8 - Prob. 5ECh. 21.8 - Prob. 6ECh. 21.8 - Prob. 7ECh. 21.8 - Prob. 8ECh. 21.8 - Prob. 9ECh. 21.8 - In Exercises 3–24, identify each of the equations...Ch. 21.8 - Prob. 11ECh. 21.8 - Prob. 12ECh. 21.8 - Prob. 13ECh. 21.8 - Prob. 14ECh. 21.8 - Prob. 15ECh. 21.8 - Prob. 16ECh. 21.8 - Prob. 17ECh. 21.8 - Prob. 18ECh. 21.8 - Prob. 19ECh. 21.8 - Prob. 20ECh. 21.8 - Prob. 21ECh. 21.8 - Prob. 22ECh. 21.8 - Prob. 23ECh. 21.8 - Prob. 24ECh. 21.8 - Prob. 25ECh. 21.8 - Prob. 26ECh. 21.8 - Prob. 27ECh. 21.8 - Prob. 28ECh. 21.8 - Prob. 29ECh. 21.8 - Prob. 30ECh. 21.8 - Prob. 31ECh. 21.8 - Prob. 32ECh. 21.8 - Prob. 33ECh. 21.8 - Prob. 34ECh. 21.8 - Prob. 35ECh. 21.8 - Prob. 36ECh. 21.8 - Prob. 37ECh. 21.8 - Prob. 38ECh. 21.8 - Prob. 39ECh. 21.8 - Prob. 40ECh. 21.8 - Prob. 41ECh. 21.8 - Prob. 42ECh. 21.8 - Prob. 43ECh. 21.8 - Prob. 44ECh. 21.8 - Prob. 45ECh. 21.8 - Prob. 46ECh. 21.8 - Prob. 47ECh. 21.8 - Prob. 48ECh. 21.9 - Prob. 1PECh. 21.9 - Prob. 2PECh. 21.9 - Prob. 3PECh. 21.9 - Prob. 1ECh. 21.9 - Prob. 2ECh. 21.9 - Prob. 3ECh. 21.9 - Prob. 4ECh. 21.9 - Prob. 5ECh. 21.9 - Prob. 6ECh. 21.9 - Prob. 7ECh. 21.9 - Prob. 8ECh. 21.9 - Prob. 9ECh. 21.9 - Prob. 10ECh. 21.9 - Prob. 11ECh. 21.9 - Prob. 12ECh. 21.9 - Prob. 13ECh. 21.9 - Prob. 14ECh. 21.9 - Prob. 15ECh. 21.9 - Prob. 16ECh. 21.9 - Prob. 17ECh. 21.9 - Prob. 18ECh. 21.9 - Prob. 19ECh. 21.9 - Prob. 20ECh. 21.9 - Prob. 21ECh. 21.9 - Prob. 22ECh. 21.9 - Prob. 23ECh. 21.9 - Prob. 24ECh. 21.9 - Prob. 25ECh. 21.9 - Prob. 26ECh. 21.10 - Prob. 1PECh. 21.10 - Prob. 2PECh. 21.10 - Prob. 1ECh. 21.10 - Prob. 2ECh. 21.10 - Prob. 3ECh. 21.10 - Prob. 4ECh. 21.10 - Prob. 5ECh. 21.10 - Prob. 6ECh. 21.10 - Prob. 7ECh. 21.10 - Prob. 8ECh. 21.10 - Prob. 9ECh. 21.10 - Prob. 10ECh. 21.10 - Prob. 11ECh. 21.10 - Prob. 12ECh. 21.10 - Prob. 13ECh. 21.10 - Prob. 14ECh. 21.10 - Prob. 15ECh. 21.10 - Prob. 16ECh. 21.10 - Prob. 17ECh. 21.10 - Prob. 18ECh. 21.10 - Prob. 19ECh. 21.10 - Prob. 20ECh. 21.10 - Prob. 21ECh. 21.10 - Prob. 22ECh. 21.10 - Prob. 23ECh. 21.10 - Prob. 24ECh. 21.10 - Prob. 25ECh. 21.10 - Prob. 26ECh. 21.10 - Prob. 27ECh. 21.10 - Prob. 28ECh. 21.10 - Prob. 29ECh. 21.10 - Prob. 30ECh. 21.10 - Prob. 31ECh. 21.10 - Prob. 32ECh. 21.10 - Prob. 33ECh. 21.10 - Prob. 34ECh. 21.10 - Prob. 35ECh. 21.10 - Prob. 36ECh. 21.10 - Prob. 37ECh. 21.10 - Prob. 38ECh. 21.10 - Prob. 39ECh. 21.10 - Prob. 40ECh. 21.10 - Prob. 41ECh. 21.10 - Prob. 42ECh. 21.10 - Prob. 43ECh. 21.10 - Prob. 44ECh. 21.10 - Prob. 45ECh. 21.10 - Prob. 46ECh. 21.10 - Prob. 47ECh. 21.10 - Prob. 48ECh. 21.10 - Prob. 49ECh. 21.10 - Prob. 50ECh. 21.10 - Prob. 51ECh. 21.10 - Prob. 52ECh. 21.10 - Prob. 53ECh. 21.10 - Prob. 54ECh. 21.10 - Prob. 55ECh. 21.10 - Prob. 56ECh. 21.10 - Prob. 57ECh. 21.10 - Prob. 58ECh. 21.10 - Prob. 59ECh. 21.10 - Prob. 60ECh. 21.11 - Prob. 1PECh. 21.11 - Prob. 2PECh. 21.11 - Prob. 1ECh. 21.11 - Prob. 2ECh. 21.11 - Prob. 3ECh. 21.11 - Prob. 4ECh. 21.11 - Prob. 5ECh. 21.11 - Prob. 6ECh. 21.11 - Prob. 7ECh. 21.11 - Prob. 8ECh. 21.11 - Prob. 9ECh. 21.11 - Prob. 10ECh. 21.11 - Prob. 11ECh. 21.11 - Prob. 12ECh. 21.11 - Prob. 13ECh. 21.11 - Prob. 14ECh. 21.11 - Prob. 15ECh. 21.11 - Prob. 16ECh. 21.11 - Prob. 17ECh. 21.11 - Prob. 18ECh. 21.11 - Prob. 19ECh. 21.11 - Prob. 20ECh. 21.11 - Prob. 21ECh. 21.11 - Prob. 22ECh. 21.11 - Prob. 23ECh. 21.11 - Prob. 24ECh. 21.11 - Prob. 25ECh. 21.11 - Prob. 26ECh. 21.11 - Prob. 27ECh. 21.11 - Prob. 28ECh. 21.11 - Prob. 29ECh. 21.11 - Prob. 30ECh. 21.11 - Prob. 31ECh. 21.11 - Prob. 32ECh. 21.11 - Prob. 33ECh. 21.11 - Prob. 34ECh. 21.11 - Prob. 35ECh. 21.11 - Prob. 36ECh. 21.11 - Prob. 37ECh. 21.11 - Prob. 38ECh. 21.11 - Prob. 39ECh. 21.11 - Prob. 40ECh. 21.11 - Prob. 41ECh. 21.11 - Prob. 42ECh. 21.11 - Prob. 43ECh. 21.11 - Prob. 44ECh. 21.11 - Prob. 45ECh. 21.11 - Prob. 46ECh. 21.11 - Prob. 47ECh. 21.11 - Prob. 48ECh. 21.11 - Prob. 49ECh. 21.11 - Prob. 50ECh. 21.11 - Prob. 51ECh. 21.11 - In Exercises 43–54, solve the given problems:...Ch. 21.11 - Prob. 53ECh. 21.11 - Prob. 54ECh. 21 - Prob. 1RECh. 21 - Prob. 2RECh. 21 - Prob. 3RECh. 21 - Prob. 4RECh. 21 - Prob. 5RECh. 21 - Prob. 6RECh. 21 - Prob. 7RECh. 21 - Prob. 8RECh. 21 - Prob. 9RECh. 21 - Prob. 10RECh. 21 - Prob. 11RECh. 21 - Prob. 12RECh. 21 - Prob. 13RECh. 21 - Prob. 14RECh. 21 - Prob. 15RECh. 21 - Prob. 16RECh. 21 - Prob. 17RECh. 21 - Prob. 18RECh. 21 - Prob. 19RECh. 21 - Prob. 20RECh. 21 - Prob. 21RECh. 21 - Prob. 22RECh. 21 - Prob. 23RECh. 21 - Prob. 24RECh. 21 - Prob. 25RECh. 21 - Prob. 26RECh. 21 - Prob. 27RECh. 21 - Prob. 28RECh. 21 - Prob. 29RECh. 21 - Prob. 30RECh. 21 - Prob. 31RECh. 21 - Prob. 32RECh. 21 - Prob. 33RECh. 21 - Prob. 34RECh. 21 - Prob. 35RECh. 21 - Prob. 36RECh. 21 - Prob. 37RECh. 21 - Prob. 38RECh. 21 - Prob. 39RECh. 21 - Prob. 40RECh. 21 - Prob. 41RECh. 21 - Prob. 42RECh. 21 - Prob. 43RECh. 21 - Prob. 44RECh. 21 - Prob. 45RECh. 21 - Prob. 46RECh. 21 - Prob. 47RECh. 21 - Prob. 48RECh. 21 - Prob. 49RECh. 21 - Prob. 50RECh. 21 - Prob. 51RECh. 21 - In Exercises 49–52, find the rectangular equation...Ch. 21 - Prob. 53RECh. 21 - Prob. 54RECh. 21 - Prob. 55RECh. 21 - Prob. 56RECh. 21 - Prob. 57RECh. 21 - Prob. 58RECh. 21 - Prob. 59RECh. 21 - Prob. 60RECh. 21 - Prob. 61RECh. 21 - Prob. 62RECh. 21 - Prob. 63RECh. 21 - Prob. 64RECh. 21 - Prob. 65RECh. 21 - Prob. 66RECh. 21 - Prob. 67RECh. 21 - Prob. 68RECh. 21 - Prob. 69RECh. 21 - Prob. 70RECh. 21 - Prob. 71RECh. 21 - Prob. 72RECh. 21 - Prob. 73RECh. 21 - Prob. 74RECh. 21 - Prob. 75RECh. 21 - Prob. 76RECh. 21 - Prob. 77RECh. 21 - Prob. 78RECh. 21 - Prob. 79RECh. 21 - Prob. 80RECh. 21 - Prob. 81RECh. 21 - Prob. 82RECh. 21 - Prob. 83RECh. 21 - Prob. 84RECh. 21 - Prob. 85RECh. 21 - Prob. 86RECh. 21 - Prob. 87RECh. 21 - Prob. 88RECh. 21 - Prob. 89RECh. 21 - Prob. 90RECh. 21 - Prob. 91RECh. 21 - Prob. 92RECh. 21 - Prob. 93RECh. 21 - Prob. 94RECh. 21 - Prob. 95RECh. 21 - Prob. 96RECh. 21 - Prob. 97RECh. 21 - Prob. 98RECh. 21 - Prob. 99RECh. 21 - Prob. 100RECh. 21 - Prob. 111RECh. 21 - Prob. 112RECh. 21 - Prob. 118RECh. 21 - Prob. 121RECh. 21 - Prob. 1PTCh. 21 - Prob. 2PTCh. 21 - Prob. 3PTCh. 21 - Prob. 4PTCh. 21 - Prob. 5PTCh. 21 - Prob. 6PTCh. 21 - Prob. 7PTCh. 21 - Prob. 8PTCh. 21 - Prob. 9PT
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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 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_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. 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_forward
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