21

Question 21

Question 21 A bus comes by every 14 minutes. The times from when a person arives at the busstop until the bus arrives follows a Uniform distribution from 0 to 14 minutes. A person arrives at the bus stop at a randomly selected time. Round to 4 decimal places where possible. a. The mean of this distribution is b. The standard deviation is c. The probability that the person will wait more than 5 minutes is d. Suppose that the person has already been waiting for 3.7 minutes. Find the probability that the person's total waiting time will be between 5.3 and 8 minutes e. 15% of all customers wait at least how long for the train? minutes.