April 1, 2015

Homework Help: STAT

Posted by Nickie on Sunday, February 10, 2013 at 1:43am.

Do you view a chocolate bar as delicious or as
fattening? Your attitude may depend on your gender.
In a study of American college students, Rozin, Bauer,
and Catanese (2003) examined the importance of food
as a source of pleasure versus concerns about food
associated with weight gain and health. The following
results are similar to those obtained in the study. The
scores are a measure of concern about the negative
aspects of eating.
Males Females
n  9 n  15
M  33 M  42
SS  740 SS  1240
a. Based on these results, is there a significant
difference between the attitudes for males and for
females? Use a two-tailed test with   .05.
b. Compute r2, the percentage of variance accounted
for by the gender difference, to measure effect size
for this study.
c. Write a sentence demonstrating how the result of
the hypothesis test and the measure of effect size
would appear in a research report.

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