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1.Two random samples are taken from two populations with the following data: Sample 1 observations: 10, 7, 13, 7, 9, 8. Sample 2 observations: 9,

1.Two random samples are taken from two populations with the following data: Sample 1 observations: 10, 7, 13, 7, 9, 8. Sample 2 observations: 9, 7, 8, 4, 6, 9.

a. Compute the two sample means.

b. Compute the two sample standard deviations.

c. What is the 90% confidence interval estimate of the difference between the two populations?

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