EBK ESSENTIAL STATISTICS FOR THE BEHAVI
2nd Edition
ISBN: 9781506386287
Author: PRIVITERA
Publisher: VST
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Chapter 9, Problem 12CAP
a.
To determine
To find: The degrees of freedom for the given scenario.
b.
To determine
To find: The degrees of freedom for the given scenario.
c.
To determine
To find: The degrees of freedom for the given scenario.
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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?
Chapter 9 Solutions
EBK ESSENTIAL STATISTICS FOR THE BEHAVI
Ch. 9 - Prob. 1FPCh. 9 - Prob. 2FPCh. 9 - Prob. 3FPCh. 9 - Prob. 4FPCh. 9 - Prob. 5FPCh. 9 - Prob. 6FPCh. 9 - Prob. 7FPCh. 9 - Prob. 8FPCh. 9 - Prob. 9FPCh. 9 - Prob. 10FP
Ch. 9 - Prob. 11CAPCh. 9 - Prob. 12CAPCh. 9 - Prob. 13CAPCh. 9 - Prob. 14CAPCh. 9 - Prob. 15CAPCh. 9 - Prob. 16CAPCh. 9 - Prob. 17CAPCh. 9 - Prob. 18CAPCh. 9 - Prob. 19CAPCh. 9 - Prob. 20CAPCh. 9 - Prob. 21CAPCh. 9 - Prob. 22CAPCh. 9 - Prob. 23CAPCh. 9 - Prob. 24CAPCh. 9 - Prob. 25CAPCh. 9 - Prob. 26PRCh. 9 - Prob. 27PRCh. 9 - Prob. 28PRCh. 9 - Prob. 29PRCh. 9 - Prob. 30PRCh. 9 - Prob. 31PRCh. 9 - Prob. 32PR
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