The Battery Life of an IPod Has an Approximate Normal

question 29

Short Answer

The battery life of an iPod has an approximate normal distribution with a mean of 6 hours and a
standard deviation of 0.5 hours. What is the probability that a randomly chosen iPod will have a
battery life between 4.5 hours and 5 hours? Give your answer as a percentage.

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Definitions:

Treasury Stock

Shares of a company's own stock that it has reacquired from shareholders but not retired, held in the company's treasury.

Net Income

Represents the amount of money that remains from revenues after all the firm's expenses, taxes, and costs are subtracted over a specific period.

Stockholders' Equity

Stockholders' Equity represents the ownership interest of shareholders in a corporation, calculated as the difference between total assets and total liabilities.

Par Value

The nominal or face value of a bond, share, or coupon as stated by the issuer, often used in the context of bonds and stock.