Functional foods are those containing nutritional supplements in addiction to natural nutrients. Examples include orange juice with calcium and eggs with omega-3. Kolodinsky, et al. (2008) examined attitudes toward functional foods for college students. For American students, the results indicated that females had a more positive attitue toward functionl foods and were more likely to purchase them compared to the males. In a similar study, a researcher asked students to rate their general attitude toward functinoal foods on a 7-point scare 9higher score is more positive. the results are as follows:
Males
n=8
M=4.69
SS=1.60
Females
n=12
M=4.43
SS=2.72
a) Do the data indicate a significant difference in attidue for males and females? use a two-tailed test with a alpha=.05
b) computer r(square), the amount of varience accounted for by the gender difference, to measure effect size.
c) write a sentence demostrating how the results of the hypothesis test and the measure of effect size would appear in a research report.;