The average starting salary for this year's graduates at a large university (LU) is $20,000 with a standard deviation of $8,000. Furthermore, it is known that the starting salaries are normally distributed.

a. What is the probability that a randomly selected LU graduate will have a starting salary of at least $34,400?

b. Individuals with starting salaries of less than $15,600 receive a low income tax break. What is the percentage of the graduates will receive the tax break?

c. What are the minimum and the maximum starting salaries of the middle 95% of the LU graduates?

d. If 189 of the recent graduates have salaries of at least $32,240, how any students graduated this year from this university?

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a PX30400 PZ30400200008000 1... View the full answer