A random sample of 49 measurements from one population had a sample mean of 10, with sample

Question:

A random sample of 49 measurements from one population had a sample mean of 10, with sample standard deviation 3. An independent random sample of 64 measurements from a second population had a sample mean of 12, with sample standard deviation 4. Test the claim that the population means are different. Use level of significance 0.01.
(a) What does the sample test statistic follow? Explain.
(b) State the hypotheses.
(c) Compute 1 - 2 and the corresponding sample test statistic.
(d) Estimate the P-value of the sample test statistic.
(e) Conclude the test.
(f) Interpret the results.
(g) Find a 95% confidence interval for μ1 - μ2. Explain the meaning of the confidence interval in the context of the problem.
Distribution
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