A University System Enrolling Hundreds of Thousands of Students Is

question 49

Short Answer

A university system enrolling hundreds of thousands of students is considering a change in the way students pay for their education.Currently,the students pay $400 per credit hour.The university system administrators are contemplating charging each student a set fee of $7,000 per quarter,regardless of how many credit hours each takes.To see if this proposal would be economically feasible,the administrators would like to know how many credit hours,on the average,each student takes per quarter.A random sample of 250 students yields a mean of 14.1 credit hours per quarter and a standard deviation of 2.3 credit hours per quarter.Suppose the administration wanted to estimate the mean to within 0.1 hours at 95% reliability and assumed that the sample standard deviation provided a good estimate for the population standard deviation.How large a total sample would they need to take?

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Definitions:

Interim Financial Reporting

Interim financial reporting involves the preparation of financial statements for periods shorter than a fiscal year, such as quarterly or half-yearly reports, to provide timely information.

LIFO

Last-In, First-Out, an inventory valuation method where the most recently acquired items are assumed to be sold first, affecting the cost of goods sold and ending inventory valuation.

Gross Profit Rates

The ratio of gross profit to net sales, indicating the percentage of revenue that exceeds the cost of goods sold.