STAT
posted by Nickie .
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 twotailed 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.

a. Divide SS by the number of scores to get variance.
Standard deviation = square root of variance
Z = (mean1  mean2)/standard error (SE) of difference between means
SEdiff = √(SEmean1^2 + SEmean2^2)
SEm = SD/√n
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
Respond to this Question
Similar Questions

Probability
Could someone please check this and let me know if I'm doing it correctly? 
Math
1. A chocolate bar is made up of 12 equal pieces.Tom ate 3/4 of a chocolate bar. Sarah ate 2/3 of the same kind of chocolate bar. Tom said he ate more chocolate than Sarah. Is he correct? 
Math
Erika eat 1/3 of a chocolate bar and gave the remaining 2/3 of the chocolate bar to her 8 friends to share equally. How much chocolate bar will each friend get? 
STAT
Functional foods are those containing nutritional supplements in addition to natural nutrients. Examples include orange juice with calcium and eggs with omega3. Kolodinsky, et al. (2008) examined attitudes toward functional foods … 
math
sophie ruth is eating a 50 gram chocolate bar which is labled 30 % cocoa how many grams of chocolate are in the chocolate bar 
Statistics
Sammy and Sally each carry a bag containing a banana, a chocolate bar, and a licorice stick. Simultaneously, they take out a single food item and consume it. The possible pairs of food items that Sally and Sammy consumed are as follows. … 
math
If it is confirmed that, two thirds of the students of a COLLEGE are female, calculate the probability that on entering the college, the first two students one meet are; (i) The same gender (ii) Different gender 
Statistics
If is confirm that two thirds of the students of a college are females, calculate the probability that on entering the college, the first two students one meet are (i) the same gender (ii) different gender 
English
I wrote a report about giving advice to eat a good place. Introduction The aim of this report is to describe the best places to eat cheaply in my area and I explain why I choose them, in addition to the reasons of the cost. I believe …