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:

Qualification Purposes

The specific reasons or objectives for requiring or seeking a particular certification, status, or level of skill.

Stock of Goods

The inventory of products or goods that a company has on hand to sell to customers.

Independent Distributors

Businesses or individuals that distribute products or services, but are not directly employed by the manufacturers of those products, allowing for operational and financial autonomy.

Internal Affairs

A doctrine in corporate law that allows the internal affairs of a corporation, such as shareholder rights, to be governed by the laws of the state of incorporation.