Question: 13.51 Calculate the value of the unpooled test statistic t in each of the following situations. In each case, assume the null hypothesis is H0:

13.51 Calculate the value of the unpooled test statistic t in each of the following situations. In each case, assume the null hypothesis is H0: m1 2 m2 5 0.

a. x1 5 35, s1 5 10, n1 5 100; x2 5 33, s2 5 9, n2 5 81.

b. The difference in sample means is 48, s.e. 1x1 2 x22 5 22.

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