A Professor Would Like to Test the Hypothesis That the Average

question 30

Multiple Choice

A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam has a standard deviation that is less than 5.0 minutes. A random sample of 15 students was selected and the sample standard deviation for the time needed to complete the exam was found to be 4.0 minutes. The degrees of freedom for this hypothesis test would be ______.

• A)16
• B)15
• C)14
• D)13

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Definitions:

Excess Cash

Funds that exceed the normal operational needs of a business, which may be used for investment or other purposes.

Earnings Per Share

A financial metric that calculates the portion of a company's profit allocated to each outstanding share of common stock, indicating the company's profitability.

Stock Repurchase

A transaction in which a company buys back its own shares from the market, often to increase the value of remaining shares by reducing the supply.

Excess Cash

Funds that exceed the normal operating needs of a company, potentially available for investment or distribution to shareholders.