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3. The salaries at a corporation are normally distributed with an average salary of $19,000 and a standard deviation of $4,000. a. What is the

3. The salaries at a corporation are normally distributed with an average salary

of $19,000 and a standard deviation of $4,000.

a. What is the probability that an employee will have a salary between

$12,520 and $13,480?

b. What is the probability that an employee will have a salary more than

$11,880?

c. What is the probability that an employee will have a salary less than

$28,440?

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