Question
The annual salaries of employees in a small company is normally distributed with a mean of $70,000 and a standard deviation of $15,000. a. (
The annual salaries of employees in a small company is normally distributed with a mean of $70,000 and a standard deviation of $15,000.
a. (3 pts)If we choose one employee at random, what is the probability that his or her salary is higher than $80,000?
b. (4 pts)If we choosenineemployees at random, what is the probability that thesample meanof their aggregated salary is higher than $80,000?
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Mathematical Excursions
Authors: Richard N Aufmann, , Joanne Lockwood, Richard D Nation, Daniel K Clegg
3rd Edition
1305161793, 9781305161795
