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 138000 dollars Assume the standard deviation is 34000 dollars Suppose you take a simple random sample of 68 graduates Find the probability that a single randomly selected salary is at least 131000 dollars P X 131000 Find the probability that a sample of size n 68 is randomly selected with a mean that is at least 131000 dollars P M 131000 Enter your answers as numbers accurate to 4 decimal places