Question: Suppose after the study, we got the following data on LDL (bad cholesterol): Treatment 1 Treatment 2 Treatment 3 Treatment 4 Sample size (ni) 58

Suppose after the study, we got the following data on LDL (bad cholesterol): Treatment 1 Treatment 2 Treatment 3 Treatment 4 Sample size (ni) 58 65 55 62 Sample mean i) 158 160 155 140 Suppose the pooled sample variance is 900. One would like to test if all treatments will yield the same mean of cholesterol levels (i.e., H0 : 1 = 2 = 3 = 4) at the significance level 0.05 assuming equal variance. What is the distribution of the test statistic under H0? What is the conclusion one will get? 2 0.05,3 = 7.81, 20.025,3 = 9.35, 20.05,4 = 9.49, 2 0.025,4 =11.14

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