Mathematics, 11.12.2020 03:20 jprofaci29

The personnel department of a large corporation would like to estimate the family dental expenses of its employees in order to determine the feasibility of providing a dental insurance plan. The standard deviation from previous years is known to be $163.26. They want the margin of error to be no more than $40. For a 95% confidence interval, how large a sample should be collected?

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The personnel department of a large corporation would like to estimate the family dental expenses of...