A confidence interval for a population mean has a margin of error of 2.3.

a. Determine the length of the confidence interval.

b. If the sample mean is 45.3, obtain the confidence interval.

c. Construct a graph that illustrates your results.

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Part 1

a. The length of the confidence interval is

enter your response here.

(Type an integer or a decimal. Do not round.)

Part 2

b. The confidence interval for mu is from

enter your response here to

enter your response here.

(Type integers or decimals. Do not round.)