Question Description
1) Suppose you want to test the claim that μ1 = μ2. Two samples are randomly selected from each
population. If a hypothesis test is performed, how should you interpret a decision that rejects the null
hypothesis?
2) Construct a 90% confidence interval for μ1 – μ2. Two samples are randomly selected from normal
populations. The sample statistics are given below. Assume that σ21 = σ22.
n1 = 10 n2 = 12
x1 = 25 x2 = 23
s1 = 1.5 s2 = 1.9
3) Construct a 95% confidence interval for μ1 – μ2. Two samples are randomly selected from normal
populations. The sample statistics are given
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