\fSuppose that we have an independent and identically distributed sample from some distribution family G dened by an unknown parameter value A. We are testing the hypotheses Howl = 1 versus Hana = 2. Our test statistic is T, and let T have an Expo) distribution. The Expo) probability density function [pdf] and cumulative distribution function (cdf), respectively, are fT(t) = leaM for t > 0 FT(t) = 1 9"\" for t > 0 The rejection region for this hypothesis test is {T S 0.5}