# Question

You want to estimate the average years of seniority for employees working for Kaneko Lt

d. The files of 49 workers are selected at random. Average seniority for those in the sample is 13.6 years. Assume you know the population standard deviation is 5.2 years.

a. Construct and interpret a 95% confidence interval estimate of average seniority for the full population of company employees.

b. Construct an 80% interval.

c. For your answers in parts a and b, identify the margin of error term and the standard error term.

d. The files of 49 workers are selected at random. Average seniority for those in the sample is 13.6 years. Assume you know the population standard deviation is 5.2 years.

a. Construct and interpret a 95% confidence interval estimate of average seniority for the full population of company employees.

b. Construct an 80% interval.

c. For your answers in parts a and b, identify the margin of error term and the standard error term.

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