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A. The random sample shown below was selected from a normal distribution. 3​, 6​, 10​, 6​,...

A. The random sample shown below was selected from a normal distribution. 3​, 6​, 10​, 6​, 9​, 2

Construct a 99​% confidence interval for the population mean μ.

Answer= (0.794,11.206)

B. Assume that sample mean x and sample standard deviation s remain exactly the same as those you just calculated but that are based on a sample of n=25 observations. Repeat part a. What is the effect of increasing the sample size on the width of the confidence​ intervals?

Help with part B

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