the salaries of the employees of a corporation are normally distributed with a mean of $58,750 and a standard deviation of $4700. show the work to get your answer. a. what is the probability that a randomly selected employee will have a salary of at least $62,000? b. what is the probability that a randomly selected employee will have a salary less than $45,000? c. what is the minimum and the maximum salaries of the middle 90% of the employees? d. what salary would an employee need to be in the top 15% of all employees?