Question

Assume that you have a random sample of ten students that has a mean midterm score of 82.75 in a business class that uses distance-learning techniques. Further assume that in another random sample of nine students in a business class that does not use distance-learning techniques, the sample mean is 75.62 and. If the midterm scores are normally distributed with a population standard deviation of 4 and 8, respectively. a. Find the expected value and standard error of the sample mean difference. b. What is the probability that the sample mean score of business class that uses distance-learning techniques will exceed that of the business class that does not use distance-learning techniques?

Answer 1