Question

Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of significance alpha , and sample sizes n 1 and n 2. Assume that the samples are independent, normal, and random. Answer parts (a) and (b)

Ha:. : U1<U2, alpha=0.025, n1=13, n2=11

Answer 1

For one lower(left) tailed test, at alpha = 0.025, df = 13+11-2 = 22

Critical value = T.INV(0.025, 22) = -2.074

the indicated value in the table is for right tail. for left tailed value we will use a negative sign.