Introduction to Probability and Statistics
14th Edition
ISBN: 9781133103752
Author: Mendenhall, William
Publisher: Cengage Learning
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Question
Chapter 3, Problem 3.23SE
a.
To determine
Find the type of variable measured in the given graph and explain them.
b.
To determine
Explain the population of interest.
c.
To determine
Find the graphical presentation which is used and explain about other graphical representation of given data.
d.
To determine
Explain the changes in the geographical and educational distributions of Facebook users in the given time period.
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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
Frequency
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 3 Solutions
Introduction to Probability and Statistics
Ch. 3.2 - Gender Differences Male and female respond ents to...Ch. 3.2 - Prob. 3.2ECh. 3.2 - Consumer Spending The table below shows the...Ch. 3.2 - Prob. 3.4ECh. 3.2 - Prob. 3.5ECh. 3.2 - Consumer Price Index The price of living in the...Ch. 3.2 - Prob. 3.7ECh. 3.2 - Prob. 3.8ECh. 3.4 - Suppose that the relationship between two...Ch. 3.4 - Prob. 3.10E
Ch. 3.4 - A set of bivariate data consists of these...Ch. 3.4 - Prob. 3.12ECh. 3.4 - Consider this set of bivariate data: a. Draw a...Ch. 3.4 - Prob. 3.14ECh. 3.4 - Grocery Costs These data relating the amount spent...Ch. 3.4 - Prob. 3.16ECh. 3.4 - Prob. 3.17ECh. 3.4 - Prob. 3.18ECh. 3.4 - Prob. 3.19ECh. 3.4 - Prob. 3.20ECh. 3 - Prob. 3.21SECh. 3 - Cheese, Please! Health-conscious Americans often...Ch. 3 - Prob. 3.23SECh. 3 - Prob. 3.24SECh. 3 - Prob. 3.25SECh. 3 - Prob. 3.26SECh. 3 - Prob. 3.27SECh. 3 - Prob. 3.28SECh. 3 - Prob. 3.29SECh. 3 - Prob. 3.30SECh. 3 - Prob. 3.31SECh. 3 - Pottery, continued Here is the percentage of...Ch. 3 - Gestation Times and Longevity The table below...Ch. 3 - Prob. 3.34SECh. 3 - Armspan and Height Leonardo da Vinci (1452-1519)...Ch. 3 - Armspan and Height Leonardo da Vinci(14521519)...Ch. 3 - Prob. 3.37SECh. 3 - Prob. 3.38SECh. 3 - Prob. 3.39SECh. 3 - Rain and Snow Is there a correlation between the...Ch. 3 - Prob. 3.41SECh. 3 - Prob. 1CSCh. 3 - Prob. 2CSCh. 3 - Prob. 3CS
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