Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is XXXXXXXXXXdollars. Assume...

Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is 151000 dollars. Assume the standard deviation is 42000 dollars. Suppose you take a simple random sample of 77 graduates.


Find the probability that a single randomly selected policy has a mean value between 140470 and 162487.2 dollars.

P(140470 X < 162487.2)="  (Enter" your="" answers="" as="" numbers="" accurate="" to="" 4="" decimal="">


Find the probability that a random sample of size n=77n=77 has a mean value between 140470 and 162487.2 dollars.

P(140470 M < 162487.2)="  (Enter" your="" answers="" as="" numbers="" accurate="" to="" 4="" decimal="">