Answer Happy

Question 2 3.33 points Save Answer The time between two phone calls in a customer care center is exponential with mean = 1/2 minutes. Find the probability P(2 minutes < X < 4 minutes). A. Answer 1/e – 1/2 Answer 1/e2 - 1/2 B. Answer 1/e2-1/4 D. Answer 1/e - 1/4