Dr. Cooper wanted to know if different vitamins (Vitamin C, Vitamin E, Vitamin A

Question

Dr. Cooper wanted to know if different vitamins (Vitamin C, Vitamin E, Vitamin A, and Vitamin D) impact  student's math performance? Five students were assigned to each of the vitamin conditions (20 students total). After taking the vitamins for a week, the students were given a math test. Here is a summary of the results:

M vitamin C = 20.2    M vitamin E = 21.4    M vitamin A = 22 M vitamin D = 20.6

ANOVA Table

Assuming a two-tailed test with alpha = .05 which of the following is the appropriate APA style report for this vitamin study?

This study provides no evidence that any of the vitamins tested have different effects on math performance, F (3, 16) = 0.36, p > .05.

Vitamin A may lead to better outcomes than the other vitamins, but overall there is no statistically significant effect, F (19) = 3.24, p > .36.

There was not statistically significant effect of vitamin type, therefore, we reject the null hypothesis, F (3, 19) = 0.36, p < .05

This study provides no statistically significant evidence that the vitamins tested have differential effects on math performance, F (3, 16) = 3.24, p > .05.

Source SS df MS F Between Treatments 9.75 3 3.25 0.36 Within Treatments 143.20 16 8.95 Total 152.95 19

Explanation / Answer

Dr. Cooper wanted to know if different vitamins (Vitamin C, Vitamin E, Vitamin A

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