Question: For these questions, the data set is given at this texts website. Assume that the data sets are from random samples and the distributions are

For these questions, the data set is given at this text’s website. Assume that the data sets are from random samples and the distributions are Normal.

a. Find a 95% confidence interval for the difference between means, state whether it captures 0, and explain what that shows about the means.

b. Perform a hypothesis test to see whether the means are significantly different using a significance level of 0.05. Explain your conclusion clearly.

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