An independentmeasures research study uses two samples each

An independent-measures research study uses two samples, each with n = 12, to compare two treatments. If the results are evaluated with a t statistic using a one-tailed test with = .01, then the critical region would have a boundary of:

t = 2.797

t = 2.492

t = 2.819

t = 2.508

Solution

2.508

Excel function used is tinv(0.02,22)

Degrees of freedom is 12+12-2 = 22