Consider the following hypothesis test. H0: ?1 − ?2 ≤ 0 Ha: ?1 − ?2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n1 = 40 n2 = 50 x1 = 25.4 x2 = 22.8 ?1 = 5.2 ?2 = 6 (a) What is the value of the test statistic? (Round your answer to two decimal places.)   (b) What is the p-value? (Round your answer to four decimal places.)

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