problemset4

# You should find that the pooled variance is closer to

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Unformatted text preview: sample variances. b. Now assume that n = 6 for the first sample and n = 16 for the second. Again, calculate the two sample variances and the pooled variance. You should find that the pooled variance is closer to the variance for the larger sample. 3. 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 = 6 n = 9 M = 31 M = 45 SS = 490 SS = 680 a. Based on these results, is there a significant difference between the attitudes for males and for females? Use a two ­tailed test with α = .05. b. Compute r2, the percentag...
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