Case Summariesa
	Diet	Weight_Gain
1	Standard	9.09
2	Standard	9.96
3	Standard	9.72
4	Standard	9.64
5	Standard	8.14
6	Junk Food	10.21
7	Junk Food	10.48
8	Junk Food	13.01
9	Junk Food	12.74
10	Junk Food	12.58
11	Organic	9.03
12	Organic	9.55
13	Organic	12.35
14	Organic	9.33
15	Organic	9.51
Total	N	15	15

Researchers want to assess if diet contributes to the prevalence of obesity among rats. 15 lab mice were randomly assigned to one of three groups: group 1 received standard diet; group 2 received a diet of junk food, and group 3 received an organic diet. The response variable is weight gain (grams) over a 1-month period. Use data provided on page 300 (Exercise 13.2) in the textbook to conduct a one-way analysis of variance for this problem. Show all hypothesis-testing steps, test for homogeneity of variances; conduct post-hoc tests using the Bonferroni method and interpret the results (include the SPSS output) and write the results