Students are given different drug treatments before revising for their exams.Some were given a memory drug, some a placebo drug and some no treatment.The exam scores(%) are shown below for the three different groups:

Memory Drug Placebo No Treatment

70 37 3

77 43 10

83 50 17

90 57 23

97 63 30

Carry out a one-way ANOVA by hand to test the hypothesis that the treatments will have different effects.Pleaseensure to includeandshow all your workleading to the answers you include in the blanks below,(Make sure you follow the 7steps discussed in the lecture module for ANOVA as well as in the REVIEW)

STEP 1: H_o:

H_a:

STEP 2: =

STEP 3:df_between=

df_within=

df_total=

STEP 4:decision rule (,) =

STEP 5:SS_between=

SS_within=

SS_total=

MS_between=

MS_within=

STEP 6:F = MS_between/MS_within=

Result = accept or reject the null hypothesis?(Indicate one selection!)

STEP 7:Conclusion =

Why?