Was it necessary to make any assumptions about the shape

Reference no: EM131405235

The personnel manager of a firm with 200 employees has selected a simple random sample of 40 employees and examined their health-benefit claims over the past year. The average amount claimed during the year was $260, with a standard deviation of $80.

Construct and interpret the 95% confidence interval for the population mean. Was it necessary to make any assumptions about the shape of the population distribution? Explain.

Reference no: EM131405235

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