In a one-sided hypothesis test where Ho: mu = 1.2I , H_{a} / mu > 1.2Ib and alpha = 0.01 , what's the rejection region we'd use in computing the Type II error?

Question

In a one-sided hypothesis test where Ho: mu = 1.2I , H_{a} / mu > 1.2Ib and alpha = 0.01 , what's the rejection region we'd use in computing the Type II error?

A. overline x < 1.38

B. overline x > - 1.22

C. overline x > 1.38

D. overline x > 1.35

Ε. (1.02, 1.38)

Answer 1

C. overline x > 1.38

In a one-sided hypothesis test with a null hypothesis stating that the population mean is equal to 1.2 and an alternative hypothesis stating that the population mean is greater than 1.2, the rejection region is in the upper tail of the distribution. Since alpha = 0.01, we will reject the null hypothesis if the sample mean is greater than 1.38.