Statistics For The Behavioral And Social Sciences: A Brief Course, Books A La Carte (6th Edition) (what's New In Psychology)
6th Edition
ISBN: 9780205989065
Author: Arthur Aron Ph.D., Elliot J. Coups Ph.d., Elaine N. Aron Ph.D.
Publisher: PEARSON
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Chapter 13, Problem 8PP
a.
To determine
Find the effect size for the
b.
To determine
Find the effect size for
c.
To determine
Find the effect size for
d.
To determine
Find the effect size for
e.
To determine
Find the effect size for
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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
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1-5
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6-10
4
11-15
7
16-20
6
21-25
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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 13 Solutions
Statistics For The Behavioral And Social Sciences: A Brief Course, Books A La Carte (6th Edition) (what's New In Psychology)
Ch. 13 - Prob. 1.1HDCh. 13 - Prob. 1.2HDCh. 13 - Prob. 1.3HDCh. 13 - Prob. 1.4HDCh. 13 - Prob. 1.5HDCh. 13 - (a) In what situation do you use a chi-square test...Ch. 13 - Prob. 2.2HDCh. 13 - Prob. 2.3HDCh. 13 - Prob. 2.4HDCh. 13 - Prob. 3.1HD
Ch. 13 - (a) What is the measure of effect size for a 2 × 2...Ch. 13 - Prob. 3.3HDCh. 13 - Prob. 3.4HDCh. 13 - Prob. 3.5HDCh. 13 - Prob. 3.6HDCh. 13 - Carry out a chi-square test for goodness of fit...Ch. 13 - Carry out a chi-square test for goodness of fit...Ch. 13 - A director of a small psychotherapy clinic is...Ch. 13 - Carry out a chi-square test for independence for...Ch. 13 - A developmental psychologist is interested in...Ch. 13 - Prob. 7PPCh. 13 - Prob. 8PPCh. 13 - What is the power of the following planned studies...Ch. 13 - Prob. 10PPCh. 13 - Carry out a chi-square test for goodness of fit...Ch. 13 - Prob. 14PPCh. 13 - Prob. 15PPCh. 13 - Prob. 17PPCh. 13 - Prob. 18PPCh. 13 - Prob. 19PPCh. 13 - Prob. 20PPCh. 13 - Prob. 21PPCh. 13 - Prob. 22PPCh. 13 - About how many participants do you need for 80%...
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