Find the Confidence Interval Specified

question 6

Multiple Choice

Find the confidence interval specified. Assume that the population is normally distributed.
-A savings and loan association needs information concerning the checking account balances of its local customers. A random sample of 14 accounts was checked and yielded a mean balance of
$664.14 and a standard deviation of $297.29. Find a 90% confidence interval for the true mean Checking account balance for local customers.

• A)$523.43 to $804.85
• B)$455.65 to $872.63
• C)$493.71 to $834.57
• D)$492.52 to $835.76

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Definitions:

Stockholders

Individuals or entities that own shares in a corporation, giving them ownership interests and rights to dividends.

Workers

Workers are individuals engaged in physical or intellectual activities to produce goods or provide services in exchange for wages.

Managers

Individuals in an organization responsible for controlling or administering all or part of a company, often involved in making crucial corporate decisions.

Pork-Barrel Legislation

Government spending or appropriations that are intended to benefit constituents of a politician in return for their political support, often through local or state projects that are not necessarily needed.