
Basic Business Statistics, Student Value Edition (13th Edition)
13th Edition
ISBN: 9780321946393
Author: Mark L. Berenson, David M. Levine, Kathryn A. Szabat
Publisher: PEARSON
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Question
Chapter 9, Problem 51PS
a.
To determine
Test whether there is evidence that the population
b.
To determine
Test whether there is evidence that the population mean waiting time to checkout is less than 4 minutes, at
c.
To determine
Interpret the
d.
To determine
Compare the conclusions obtained in (a) and (b).
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Who is the better student, relative to his or her classmates? Here’s all the information you ever wanted to know
3. A bag of Skittles contains five colors: red, orange, green, yellow, and purple. The
probabilities of choosing each color are shown in the chart below. What is the probability
of choosing first a red, then a purple, and then a green Skittle, replacing the candies in
between picks?
Color
Probability
Red
0.2299
Green
0.1908
Orange
0.2168
Yellow
0.1889
Purple
0.1736
Name:
Quiz A 5.3-5.4
Sex
Female
Male
Total
Happy
90
46
136
Healthy
20
13
33
Rich
10
31
41
Famous
0
8
8
Total
120
98
218
Use the following scenario for questions 1 & 2.
One question on the Census at School survey
asks students if they would prefer to be happy,
healthy, rich, or famous. Students may only
choose one of these responses. The two-way
table summarizes the responses of 218 high
school students from the United States by
sex.
Preferred
status
1. Define event F as a female student and event R as rich.
a. Find
b. Find or
c. Find and
2. Define event F as a female student and event R as rich.
a. Find
b. Find
c. Using your results from a and b, are these events (female student and rich)
independent?
Use the following scenario for questions 3 & 4.
At the end of a 5k race, runners are
offered a donut or a banana. The
event planner examined each
runner's race bib and noted whether
Age
Less than 30 years old
At least 30 years old
Total
Choice
Donut
Banana
52
54
106
5
72
77
Total
57
126…
Chapter 9 Solutions
Basic Business Statistics, Student Value Edition (13th Edition)
Ch. 9 - If you use a 0.005 level of significance in a...Ch. 9 - If you use a 0.05 level of significance in a...Ch. 9 - If you use a 0.10 level of significance in a...Ch. 9 - If you use a 0.01 level of significance in a...Ch. 9 - What is your decision in problem 9.4 if...Ch. 9 - What is the p -value if, in a two-tail hypothesis...Ch. 9 - In problem 9.6, what is your statistical decision...Ch. 9 - What is the p-value if, in a two -tail hypothesis...Ch. 9 - In the U.S. legal system, a defendant is presumed...Ch. 9 - Suppose the defendant in Problem 9.9 is presumed...
Ch. 9 - Many consumer groups feel that U.S. Food and Drug...Ch. 9 - As a result of complaints from both students and...Ch. 9 - Prob. 13PSCh. 9 - The quality-control manager at a compact...Ch. 9 - Suppose that in Problem 9.14, the standard...Ch. 9 - A bottled water distributor wants to determine...Ch. 9 - Suppose that in Problem 9.16, the standard...Ch. 9 - If, In a sample of n=16 selected from a normal...Ch. 9 - In Problem 9.18, how many degrees of freedom does...Ch. 9 - In Problem 9.18, 9.19, what are the Critical...Ch. 9 - In, Problem 9.18, 9.19, and 9.20, what is your...Ch. 9 - If, in a sample of n=16 selected from a...Ch. 9 - If, in a sample of n=160 selected from a...Ch. 9 - You are the manager of a restaurant for a...Ch. 9 - A manufacturer of chocolate candies uses machines...Ch. 9 - Prob. 26PSCh. 9 - The U.S. Department of Transportation requires...Ch. 9 - The file FastFood contains the amount that a...Ch. 9 - An insurance company has the business objective of...Ch. 9 - The following data (in Drink) represent the amount...Ch. 9 - One of the major measures of the quality of...Ch. 9 - A manufacturing company produces steel housings...Ch. 9 - One operation of a steel mill is to cut pieces of...Ch. 9 - In Problem 3.69 on page 156, you were introduced...Ch. 9 - Prob. 35PSCh. 9 - In a one-tail hypothesis test where you reject H0...Ch. 9 - In Problem 9.36, what is your statistical decision...Ch. 9 - In a one-tail hypothesis test where you reject H0...Ch. 9 - In Problem 9.38, what is your statistical decision...Ch. 9 - In a one-tail hypothesis test where you reject H0...Ch. 9 - In Problem 9.40, what is your statistical decision...Ch. 9 - In a one-tail hypothesis test where you reject H0...Ch. 9 - In Problem 9.42, what is your statistical decision...Ch. 9 - In a one-tail hypothesis test where you reject H0...Ch. 9 - In Problem 9.44, what is your statistical decision...Ch. 9 - Prob. 46PSCh. 9 - Prob. 47PSCh. 9 - Prob. 48PSCh. 9 - You are the manager of a restaurant that delivers...Ch. 9 - A survey of nonprofit organizations showed that...Ch. 9 - Prob. 51PSCh. 9 - If, a random sample of 400 items, 88 are...Ch. 9 - In Problem 9.52, if the null hypothesis is that 20...Ch. 9 - In Problem 9.52 and 9.53, suppose you are testing...Ch. 9 - Prob. 55PSCh. 9 - The worldwide market share for the Mozilla Firefox...Ch. 9 - One of the issues facing organizations Is...Ch. 9 - Prob. 58PSCh. 9 - A cellphone provider has the business objective of...Ch. 9 - Prob. 60PSCh. 9 - What is the difference between a null hypothesis,...Ch. 9 - What is the difference between a Type I error and...Ch. 9 - What is meant by the power of a test?Ch. 9 - What is the difference between a one -tail test...Ch. 9 - What is meant by a p-value?Ch. 9 - How can a confidence interval estimate for the...Ch. 9 - What is the six-step critical value approach to...Ch. 9 - What is the five-step p-value approach to...Ch. 9 - In hypothesis testing, the common level of...Ch. 9 - Financial institutions utilize prediction models...Ch. 9 - Prob. 71PSCh. 9 - The owner of a speciality coffee shop wants to...Ch. 9 - An auditor for a government agency was assigned...Ch. 9 - A bank branch located in a commercial district of...Ch. 9 - Call centers today play an important role in...Ch. 9 - An important quality characteristic used by the...Ch. 9 - Studies conducted by the manufacturer of Boston...Ch. 9 - The manufacturer of Boston and Vermont asphalt...Ch. 9 - Referring to the results of problems 9.76 through...
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