4h.  Consider the following hypothesis test. H0: ?1 − ?2 = 0 Ha: ?1 − ?2 ≠ 0 The following results are from independent samples taken from two populations. Sample 1 Sample 2 n1 = 35 n2 = 40 x1 = 13.6 x2 = 10.1 s1 = 5.6 s2 = 8.1   (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.)   (c) What is the p-value? (Round your answer to four decimal places.) p-value =

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