You may need to use the appropriate technology to answer this question. 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 (a) What is the value of the test statistic? (Use  x1 − x2.  Round your answer to three decimal places.)

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