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 167000 dollars. Assume the standard deviation is 34000 dollars. Suppose you take a simple random sample of 89 graduates. Find the probability that a single randomly selected policy has a mean value between 160512.8 and 180695.2 dollars. P(160512.8 < X < 180695.2) = Find the probability that a random sample of size n = 89 has a mean value between 160512.8 and 180695.2 dollars. P(160512.8 Next Question (Enter your answers as numbers accurate to 4 decimal

Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 116 and 144?

The probability that a randomly chosen student in a statistics class submits his/her homework on time is 0.39.  There is 46 student in the class. Each student does his/her homework independently. What is the standard deviation of X, where X is the number of students who submit the homework on time?

The probability that a randomly chosen student in a statistics class submits his/her homework on time is 0.12.  There is 35 student in the class. Each student does his/her homework independently. What is the standard deviation of X, where X is the number of students who submit the homework on time?