# Question: a A random sample of 25 was drawn from a

a. A random sample of 25 was drawn from a population. The sample mean and standard deviation are x̄ = 510 and s = 125. Estimate µ with 95% confidence.

b. Repeat part (a) with n = 50.

c. Repeat part (a) with n = 100.

d. Describe what happens to the confidence interval estimate when the sample size increases.

b. Repeat part (a) with n = 50.

c. Repeat part (a) with n = 100.

d. Describe what happens to the confidence interval estimate when the sample size increases.

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