Two new drugs are being tested for their effect on the numbe

Two new drugs are being tested for their effect on the number of days a patient must remain hospitalized after surgery. A control group is receiving a placebo, and two treatment groups are each receiving one of two new drugs, both developed to promote recovery. The null hypothesis is that there is no difference between the means. The results of an analysis of variance used to analyze the data are shown here.

(a) How many patients were there?


(b) How does the table verify that there was one control group and two test groups?
df(Group) =

(c) Using the SS values, verify the two mean square values.

(d) Using the MS values, verify the F-value.

Solution

a) No of patients = 16

b) df (group) =2 this means no of groups is 2+1 =3

Hence there were two groups and one placebo

c) MSG=5.5

MSE= 2.61

d) F value = 5.5/2.61 = 2.107

= 2.11 (rounded off to 2 decimals)

Verified