Question

In: Statistics and Probability

Provided below are summary statistics for independent simple random samples from two populations. Use the pooled​...

Provided below are summary statistics for independent simple random samples from two populations. Use the pooled​ t-test and the pooled​ t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x1=12, s1=2.4, n1=19​, x2=13, s2=2.2​, n2=19

a.​ Two-tailed test, a=0.01

b. 99% confidence interval

Part 1) First, what are the correct hypotheses for a​ two-tailed test?

Part 2) ​Next, compute the test statistic.

Part 3) Determine the​ P-value.

Part 4) What is the conclusion of the hypothesis​ test?

Since the​ P-value is (equal to or less) or (greater) than "a", (do not reject) or (reject) H0.

Part 5) The 99% confidence interval is from _ to _

Solutions

Expert Solution

a)

b)


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