Statistics (13th Edition)
13th Edition
ISBN: 9780134080215
Author: James T. McClave, Terry T Sincich
Publisher: PEARSON
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Chapter 5.4, Problem 60LM
a.
To determine
To calculate: The IQR.
b.
To determine
To Calculate: The
c.
To determine
To Check: The value of
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14
A survey is conducted to determine whether
would prefer to work at home, if given the
20 office employees of a certain company
chance. The overall results are shown in the
first bar graph, and the results broken down
by gender are presented in the second.
a. Interpret the results of each graph.
b. Discuss the added value in including gen-
der in the second bar graph. (The second
bar graph in this problem is called a side
by side bar graph and is often used to
show results broken down by two or more
variables.)
c. Compare the side by side bar graph with
the two pie charts that you made for
Question 6. Which of the two methods is
best for comparing two groups, in your
opinion?
A
Would you prefer to work at home? (n=20)
60
50
40
Percent
20
30
20
30
10
0
No
Yes
Prefer to work at home? (10 males, 10 females)
80
Percent
60
00
40
40
20-
No
Yes
No
Yes
Female
Male
Frequency
12
Suppose that a random sample of 270 gradu-
ating seniors are asked what their immediate
priorities are, including whether buying a
house is a priority. The results are shown in
the following bar graph.
a. The bar graph is misleading; explain why.
b. Make a new bar graph that more fairly
presents the results.
Is Buying a House a Priority?
300
250
200
150
100
50
0
Yes
No
Undecided
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11
A polling organization wants to find out
what voters think of Issue X. It chooses a
random sample of voters and asks them
for their opinions of Issue X: yes, no, or
no opinion. I organize the results in the
following bar graph.
a. Make a frequency table of these results
(including the total number).
brocb. Evaluate the bar graph as to whether it
biz s b fairly represents the results.
of beau no
STORE TO OW! vd wob spind
550
540
500
vd
480
420
360
300
250
240
Yes
No
Undecided
Opinion on Issue X
Chapter 5 Solutions
Statistics (13th Edition)
Ch. 5.2 - Give a characteristic of a uniform random...Ch. 5.2 - The uniform distribution is sometimes referred to...Ch. 5.2 - Suppose x is a random variable best described by a...Ch. 5.2 - Refer to Exercise 5.3. Find the following...Ch. 5.2 - Suppose x is a random variable best described by a...Ch. 5.2 - Refer to Exercise 5.5. Find the value of a that...Ch. 5.2 - 4.137 The random variable x is best described by a...Ch. 5.2 - The random variable x is best described by a...Ch. 5.2 - Prob. 5.1AECh. 5.2 - Prob. 5.2AE
Ch. 5.2 - Prob. 9ACBCh. 5.2 - 4.175 Requests to a Web server. According to...Ch. 5.2 - 4.142 Detecting anthrax. Researchers at the...Ch. 5.2 - Prob. 12ACBCh. 5.2 - Prob. 13ACBCh. 5.2 - Social network densities. Social networks involve...Ch. 5.2 - Prob. 15ACICh. 5.2 - Prob. 16ACICh. 5.2 - 4.147 Soft-drink dispenser. The manager of a local...Ch. 5.2 - Time delays at a bus stop. A bus is scheduled to...Ch. 5.2 - Prob. 19ACACh. 5.2 - Reliability of a robotic device. The reliability...Ch. 5.3 - Describe the shape of a normal probability...Ch. 5.3 - If x has a normal distribution with mean μ and...Ch. 5.3 - What is the name given to a normal distribution...Ch. 5.3 - Find the area under the standard normal...Ch. 5.3 - Find each of the following probabilities for a...Ch. 5.3 - Find the following probabilities for the standard...Ch. 5.3 - 4.90 Give the z-score for a measurement from a...Ch. 5.3 - Find a value z0 of the standard normal random...Ch. 5.3 - 4.88 Find a value of the standard normal random...Ch. 5.3 - Suppose the random variable x is best described by...Ch. 5.3 - 4.93 Suppose x is a normally distributed random...Ch. 5.3 - Suppose x is a normally distributed random...Ch. 5.3 - Refer to Exercise 5.32. Find x0 such that
10% of...Ch. 5.3 - Suppose x is a normally distributed random...Ch. 5.3 - The random variable x has a normal distribution...Ch. 5.3 - The random variable x has a normal distribution...Ch. 5.3 - Applet Exercise 4.6
Open the applet Sample from a...Ch. 5.3 - Dental anxiety study. To gauge their fear of going...Ch. 5.3 - 4.99 Tomato as a taste modifier. Miraculin—a...Ch. 5.3 - Deep mixing of soil. Deep mixing is a ground...Ch. 5.3 - Prob. 40ACBCh. 5.3 - Shopping vehicle and judgment. Refer to the...Ch. 5.3 - Shell lengths of sea turtles. Refer to the Aquatic...Ch. 5.3 - Prob. 43ACBCh. 5.3 - 4.191 Optimal goal target in soccer. When...Ch. 5.3 - 4.106 Voltage sags and swells. Refer to the...Ch. 5.3 - Prob. 46ACICh. 5.3 - Prob. 47ACICh. 5.3 - 4.199 Rating employee performance. Almost all...Ch. 5.3 - 4.112 California’s electoral college votes. During...Ch. 5.3 - Alcohol, threats, and electric shocks. A group of...Ch. 5.3 - 4.116 Box plots and the standard normal...Ch. 5.3 - Load on frame structures. In the Journal of the...Ch. 5.3 - Executive coaching and meeting effectiveness. Poor...Ch. 5.4 - Why is it important to check whether the sample...Ch. 5.4 - Give four methods for determining whether the...Ch. 5.4 - 4.117 If a population data set is normally...Ch. 5.4 - What is a normal probability plot and how is it...Ch. 5.4 - Prob. 59LMCh. 5.4 - 4.118 Consider a sample data set with the...Ch. 5.4 - Examine the following sample data.
Construct a...Ch. 5.4 - Examine the sample data in the next...Ch. 5.4 - Irrelevant speech effects. Refer to the analysis...Ch. 5.4 - Prob. 64ACBCh. 5.4 - Prob. 65ACBCh. 5.4 - 4.122 Shear strength of rock fractures....Ch. 5.4 - Estimating glacier elevations. Digital elevation...Ch. 5.4 - Prob. 68ACBCh. 5.4 - Prob. 69ACICh. 5.4 - Prob. 71ACICh. 5.4 - Prob. 72ACICh. 5.4 - 4.130 Permeability of sandstone during weathering....Ch. 5.4 - Prob. 74ACICh. 5.4 - Blond hair types in the Southwest Pacific. Refer...Ch. 5.4 - Prob. 76ACACh. 5.5 - For large n (say, n = 100), why is it advantageous...Ch. 5.5 - Prob. 78UPCh. 5.5 - Suppose x is a binomial random variable with p =...Ch. 5.5 - Assume that x is a binomial random variable with n...Ch. 5.5 - Prob. 81LMCh. 5.5 - Prob. 82LMCh. 5.5 - Assume that x is a binomial random variable with n...Ch. 5.5 - 4.103 Blood diamonds. According to Global Research...Ch. 5.5 - Prob. 85ACBCh. 5.5 - Where will you get your next pet? Refer to...Ch. 5.5 - Analysis of bottled water. Refer to the report on...Ch. 5.5 - LASIK surgery complications. According to studies,...Ch. 5.5 - Cesarean birth study. In Exercise 4.73 (p. 212),...Ch. 5.5 - Chemical signals of mice. Refer to the Cell (May...Ch. 5.5 - Prob. 91ACICh. 5.5 - Prob. 92ACICh. 5.5 - Prob. 93ACICh. 5.5 - Body fat in men. The percentage of fat in the...Ch. 5.5 - Prob. 95ACACh. 5.5 - Prob. 96ACACh. 5.6 - What are the characteristics of an exponential...Ch. 5.6 - The exponential distribution is often called the...Ch. 5.6 - Determine the value of e−a/θ for each of the...Ch. 5.6 - 4.135 Suppose x has an exponential distribution...Ch. 5.6 - 4.136 Suppose x has an exponential distribution...Ch. 5.6 - 4.138 The random variable x can be adequately...Ch. 5.6 - Prob. 103LMCh. 5.6 - Prob. 104ACBCh. 5.6 - Prob. 105ACBCh. 5.6 - 4.144 Critical-part failures in NASCAR vehicles....Ch. 5.6 - Prob. 107ACBCh. 5.6 - 4.140 Preventative maintenance tests. The optimal...Ch. 5.6 - Prob. 109ACICh. 5.6 - Prob. 110ACICh. 5.6 - Prob. 111ACICh. 5.6 - Prob. 112ACICh. 5.6 - Prob. 113ACACh. 5.6 - Prob. 114ACACh. 5 - Prob. 115UPCh. 5 - Prob. 116UPCh. 5 - 4.165 Find the following probabilities for the...Ch. 5 - Prob. 118LMCh. 5 - The random variable x has a normal distribution...Ch. 5 - The random variable x has a normal distribution...Ch. 5 - Prob. 121LMCh. 5 - Prob. 122LMCh. 5 - Prob. 123LMCh. 5 - Prob. 124ACBCh. 5 - Prob. 125ACBCh. 5 - Prob. 126ACBCh. 5 - Prob. 127ACBCh. 5 - Prob. 128ACBCh. 5 - Prob. 129ACBCh. 5 - Prob. 130ACBCh. 5 - Prob. 131ACBCh. 5 - Where will you get your next pet? Refer to...Ch. 5 - Prob. 133ACBCh. 5 - Prob. 134ACBCh. 5 - Prob. 135ACBCh. 5 - Prob. 136ACICh. 5 - Visually impaired students. The Journal of Visual...Ch. 5 - Prob. 138ACICh. 5 - Prob. 139ACICh. 5 - Prob. 140ACICh. 5 - Galaxy velocity study. Recall The Astronomical...Ch. 5 - Prob. 142ACICh. 5 - Prob. 143ACICh. 5 - Prob. 144ACICh. 5 - 4.126 Wear-out of used display panels. Wear-out...Ch. 5 - Prob. 146ACICh. 5 - Forest development following wildfires. Ecological...Ch. 5 - Prob. 148ACICh. 5 - Prob. 149ACICh. 5 - Prob. 150ACICh. 5 - Prob. 151ACICh. 5 - 4.152 Reliability of CO-ROMs. In Reliability Ques...Ch. 5 - Prob. 153ACACh. 5 - Prob. 154ACACh. 5 - Prob. 155ACACh. 5 - Prob. 156CTCCh. 5 - Prob. 157CTC
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