For the following independent random samples, use the z-test and the 0.01 level of significance in t
Question: For the following independent random samples, use the z-test and the 0.01 level of significance in testing H0: μ1 = μ2 versus H1: μ1 ≠ μ2
xbar1 = 33.5 s1 = 6.4 n1 = 31
Xbar2 = 27.6 s2 = 2.7 n2 = 30
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