# Question: A confidence interval for a population mean has a margin

A confidence interval for a population mean has a margin of error of 3.4.

a. Determine the length of the confidence interval.

b. If the sample mean is 52.8, obtain the confidence interval.

c. Construct a graph similar to Fig. 8.6 on page 320.

a. Determine the length of the confidence interval.

b. If the sample mean is 52.8, obtain the confidence interval.

c. Construct a graph similar to Fig. 8.6 on page 320.

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