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Suppose that the data concerning the first-year salaries of recent graduates is normally distributed with the...

Suppose that the data concerning the first-year salaries of recent graduates is normally distributed with the population mean μ= $60000 and the population standard deviation σ = $15000.

a. Find the probability of a randomly selected recent graduate earning less than $45000 annually. b. Find the probability of randomly selecting a recent graduate that makes more than $80000 a year, given the same normal distribution. c. Find the range of annual salaries of the top 15% earners, given the same distribution of recent graduates.

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