Question

Functional foods are those containing nutritional supplements in addition to natural nutrients. For example, orange juice with calcium. A researcher asked students to rate their general attitude towards functional foods on a 7-point scale (higher score is more positive). The results are as follow:

Females	Males
n = 8	n = 12
M = 4.69	M = 4.43
SS = 1.60	SS = 1.72

Do the data indicate a significant difference in attitude for males and females? Use a two-tailed test with α = .05

(A) Your alternative hypothesis in words is

a. Females have more positive attitude towards functional foods than males.

b. Males have more positive attitude towards functional foods than females.

c. There are no significant differences between males and females in their attitude toward functional foods.

d. There are significant differences between males and females in their attitude toward functional foods.

(B) The t-statistic is:

(C) Your decision is

Fail to reject the null hypothesis and conclude that there are significant differences between males and females in their attitude toward functional foods.

Fail to reject the null hypothesis and conclude that there are not significant differences between males and females in their attitude toward functional foods.

Reject the null hypothesis and conclude that there are not significant differences between males and females in their attitude toward functional foods.

Reject the null hypothesis and conclude that there are significant differences between males and females in their attitude toward functional foods.

(D) Compute r²

r² is ____.

Answer 1