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 139000 dollars and the standard deviation is 39000 dollars. Suppose you take a simple random sample of 91 graduates. Find the probability that a single randomly selected salary that doesn't exceed 143000 dollars. Answer Find the probability that a sample of size n = 91 is randomly selected with a mean that that doesn't exceed 143000 dollars. Answer= Enter your answers as numbers accurate to 4 decimal places.
