The Life Expectancy of Computer Terminals Is Normally Distributed with a Mean

question 18

Short Answer

The life expectancy of computer terminals is normally distributed with a mean of 4 years and a standard deviation of 10 months.
a.What is the probability that a randomly selected terminal will last more than 5 years?
b.What percentage of terminals will last between 5 and 6 years?
c.What percentage of terminals will last less than 4 years?
d.What percentage of terminals will last between 2.5 and 4.5 years?
e.If the manufacturer guarantees the terminals for 3 years (and will replace them if they malfunction), what percentage of terminals will be replaced?

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Money Income

The total amount of monetary earnings or receipts over a specified period, not considering the effects of inflation.

Prices

The amounts of money expected, required, or given in payment for something, reflecting the value assigned to goods or services.

Consumer Purchases

The total amount of goods and services bought by individuals and households in a specific period.

Combination Of Candy

An assortment or selection of different types of candies, often packaged together.