A Random Sample of 25 Statistics Examinations Was Taken

question 10

Multiple Choice

A random sample of 25 statistics examinations was taken. The average score in the sample was 76 with a variance of 144. Assuming the scores are normally distributed, the 99% confidence interval for the population average examination score is

• A)70.02 to 81.98
• B)69.82 to 82.18
• C)70.06 to 81.94
• D)69.48 to 82.52

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Definitions:

Working Capital

The difference between a company's current assets and its current liabilities, representing the short-term liquidity and operational efficiency of the company.

Fixed Assets

Long-term tangible assets that a firm uses in its operations and that are not expected to be consumed or converted into cash within a year.

Receivables

Money owed to a company by its customers for goods or services that have been delivered or used but not yet paid for.

Modified Accelerated Cost Recovery System (MACRS)

A method of depreciation used for tax purposes in the United States that allows businesses to recover investments in certain property over a specified life through annual deductions.