Consider the following hypothesis test for the mean differen

Consider the following hypothesis test for the mean difference. (Give your answers correct to four decimal places.)

Determine the p-value for H_o: ?_d = 0 and H_a: ?_d ? 0, with n = 25 and t = -1.8

Solution

The degree of freedom =n-1=25-1=24

It is a two-tailed test.

So the p-value =2*P(t<-1.8) = 0.0844 (from student t table)