Construct a 95 confidence interval estimate of the mean

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Reference no: EM13614862

The personnel director of a large corporation wishes to study absenteeism among clerical workers at the corporation's central office during the year. A random sample of 25 clerical workers reveals the following:

• Absenteeism: X bar = 9.7 days, S = 4.0 days

• 12 clerical workers were absent more than 10 days.

a) Construct a 95% confidence interval estimate of the mean number of absences for clerical workers during the year.

b) Construct a 95% confidence interval estimate of the population proportion of clerical workers absent more than 10 days during the year.

Reference no: EM13614862

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