Stats: Data and Models
5th Edition
ISBN: 9780135164013
Author: DeVeaux
Publisher: PEARSON CO
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Chapter 26, Problem 14E
a.
To determine
Give comments on the analysis performed by a student and identify the problem with the analysis, if any.
b.
To determine
Suggest an appropriate analysis for this experiment.
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Students have asked these similar questions
A client of a commercial rose grower has been keeping records on the shelf-life of a rose. The client sent the following frequency distribution to the grower.
Rose Shelf-Life
Days of Shelf-Life Frequency fi
1-5
2
6-10
4
11-15
7
16-20
6
21-25
26-30
5
2
Step 2 of 2: Calculate the population standard deviation for the shelf-life. Round your answer to two decimal places, if necessary.
A market research firm used a sample of individuals to rate the purchase potential of a particular product before and after the individuals saw a new television commercial about the product. The purchase potential ratings were based on a 0 to 10 scale, with higher values indicating a higher purchase potential. The null hypothesis stated that the mean rating "after" would be less than or equal to the mean rating "before." Rejection of this hypothesis would show that the commercial improved the mean purchase potential rating. Use = .05 and the following data to test the hypothesis and comment on the value of the commercial.
Purchase Rating
Purchase Rating
Individual
After
Before
Individual
After
Before
1
6
5
5
3
5
2
6
4
6
9
8
3
7
7
7
7
5
4
4
3
8
6
6
What are the hypotheses?H0: d Ha: d
Compute (to 3 decimals).Compute sd (to 1 decimal).
What is the p-value?The p-value is
What is your decision?
Why would you use a histograph or bar graph? Which would be better and why for the data shown.
Chapter 26 Solutions
Stats: Data and Models
Ch. 26.3 - The student conducting the paper airplane...Ch. 26.3 - Prob. 2JCCh. 26.3 - Prob. 3JCCh. 26.3 - Prob. 4JCCh. 26.3 - Prob. 5JCCh. 26.3 - Prob. 6JCCh. 26 - Prob. 1ECh. 26 - Prob. 2ECh. 26 - Prob. 4ECh. 26 - Prob. 5E
Ch. 26 - Prob. 6ECh. 26 - Prob. 7ECh. 26 - Prob. 8ECh. 26 - Prob. 9ECh. 26 - Prob. 10ECh. 26 - Prob. 11ECh. 26 - Sprouts An experiment on mung beans was performed...Ch. 26 - Prob. 13ECh. 26 - Prob. 14ECh. 26 - Prob. 15ECh. 26 - Prob. 16ECh. 26 - Prob. 17ECh. 26 - Washing For his final project, Jonathan examined...Ch. 26 - Prob. 19ECh. 26 - Prob. 20ECh. 26 - Prob. 21ECh. 26 - Chromatography A gas chromatograph is an...Ch. 26 - Prob. 23ECh. 26 - Prob. 24ECh. 26 - Prob. 25ECh. 26 - Peas In an experiment on growing sweet peas, a...Ch. 26 - Prob. 27ECh. 26 - Prob. 28E
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