x1 = 10, s1 = 2.1, n1 = 15, x2 = 12, s2 = 2.3, n2 =
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a. Two-tailed test, α = 0.05
b. 95% confidence interval
We have provided summary statistics for independent simple random samples from two populations. In each case, use the pooled t-test and the pooled t interval procedure to conduct the required hypothesis test and obtain the specified confidence interval.
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