Question 6.65

65. Number of Courses Taught. Refer to Exercise 61.

  1. Find and interpret the expected number of courses.
  2. Calculate the variance and standard deviation of the number of courses taught.
  3. Use the -score method to determine whether it is unusual to teach five courses.

6.1.65

(a) The expected number of classes taught is 2.46. (b) classes squared; classes. (c) It is unusual to teach 5 classes.