The Amount of Time Required for an Oil and Filter

question 78

Short Answer

The amount of time required for an oil and filter change on an automobile is normally distributed with a mean of 45 minutes and a standard deviation of 10 minutes.A random sample of 16 cars is selected.What is the probability that the sample mean will be between 39 and 48 minutes?

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Definitions:

Reacquired Shares

Shares that have been repurchased by the issuing company, reducing the amount of outstanding stock on the open market.

Common Stock

Common Stock represents equity ownership in a corporation, granting holders voting rights and a share in the company's profits through dividends.

Retained Earnings

The portion of net income left over for the business after it has paid out dividends to its shareholders, indicated on the balance sheet.

Net Income

The conclusive profit of a corporation post-deduction of all operational costs and taxation from the aggregate revenue.