Question

The NIH wants to compare the mean weight loss for five different diets. They measure the weight loss (in pounds) of 5 men F25 assigned to each of the diets for one month. The resulting data set is below. Use this file: Assignment 9q3 data FOR R a) Which of the following is NOT an assumption that should be checked before performing an ANOVA? 1 Pounds Diet 1.7 0.7 0.8 0.6 0.1 1.2 1.6 1.5 . The average weight loss should be roughly the same for each diet. Weight loss should be roughly normally distributed for each diet. The variability in weight loss should be roughly the same for each diet 10 b) What is the F statistic for the ANOVA? Give your answer to at least three decimal places. 0.6 12 0.8 13 2.1 1.2 e) using a 0 01 level of significance, what ls the critical point that one would compare to the F istatistic in order to make a conclusion ? Give your answer to three decimal places. 14 16 18 d) What is the P-value from the ANOVA? Give your answer to four decimal places e) What is the proper conclusion for NIH in this case? the ANOVA? Give your answer to four decimal places. 0.1 0.9 3.3 2.2 。Fail to reject the claim that all diets are equivalent in terms of mean weight loss because the F statistic is smaller than the critical point. O Diet 4 has the largest mean weight O Diet 5 has the largest mean weight loss because the F statistic is larger than the critical point. O Fail to reject the claim that all diets are equivalent in terms of mean weight 19 loss because the F statistic is larger than the critical point. 0.7 -0.7 loss because the F statistic is larger than the critical point. 23 24 all diets are equivalent in terms of mean weight loss because the F statistic is larger than the Reject the claim that critical point. O 0.8 26

Answer 1

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