Suppose we wanted to test the hypothesis that a control group of cancer patients (Group 1) would report higher mean pain ratings than an experimental group receiving special massage treatments (Group 2). Use the following information.

mean group 1 = 78.5 s²₁ = 42.1 n₁ = 25

mean group 2 = 72.1 s²₂ = 39.7 n₂

a. Compute a t-test for independent groups:

b. Using .05 for a one-tailed test, is the t statistic significant?

c. Write one or two sentences (in plain English/non-statistical terms) that could be used to report the results obtained for the t-test.