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?
a. 0.0312
b. 0.9625
c. 0.9909
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