A Researcher Is Comparing Three Groups of the Same Size

Multiple Choice

A researcher is comparing three groups of the same size. The sample mean of the first group is 12, the sample mean of the second group is 16, and the sample mean of the third group is 20. If the Scheffé F-test
Value for comparing group 1 with group 2 is 7.4, then the Scheffé F-test value for comparing group 2 with
Group 3 will be:

A) 3.7
B) 7.4
C) 14.8
D) Cannot be determined with the information given