It is the area in the normal curve that leads to rejection of null hypothesis.

It is the degree of uncertainty about the statistical statement under the same conditions used to determine the confidence level.

Which of the following is the appropriate rejection region for the following given? hypothesis test on population mean; α = 0.01; two-tailed test; n = 25; σ = 2 .

Which of the following is the appropriate rejection region for the following given? hypothesis test on population mean; α = 0.05; one-tailed test (right); n = 73; s = 8.2