For problems 13 through 15 the wait times have an exponential distribution. 13. The average wait time is 5 minutes. What is the probability the wait time exceeds 8 minutes? (a) 0.202 (b) 0.224 (c)...

q-15

Extracted text: For problems 13 through 15 the wait times have an exponential distribution. 13. The average wait time is 5 minutes. What is the probability the wait time exceeds 8 minutes? (a) 0.202 (b) 0.224 (c) 0.239 (d) 0.246 14. The average wait time is 8 minutes. What is the probability the wait time is less than 5 minutes? (a) 0.338 (b) 0.396 (c) 0.465 (d) 0.516 15. The probability the wait ime exceeds 10 minutes is 0.8. What is the average wait time in minutes? (a) 13.79 (b) 23.94 (c) 44.81 (d) 62.07