Question: For a data set obtained from a sample, n = 20 and x. It is known that = 3.1. The population is normally distributed.

For a data set obtained from a sample, n = 20 and x̅. It is known that σ = 3.1. The population is normally distributed.

a. What is the point estimate of µ?

b. Make a 99% confidence interval for µ.

c. What is the margin of error of estimate for part b?

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