The time it takes for Marriott Marquis Chicago hotel guests to wait for an elevator is uniformly distributed between 45 seconds and 5.75 minutes. a) What is the probability that a guest waits between 1.6 minutes and 5.5 minutes for an elevator? (Round to 3 decimal places.) 0.780 b) What is the variance of the wait times? (Round to 2 decimal places.) 2.08 c) 8% of the time, the wait time for an elevator is less than k minutes. Find k. (Round to 2 decimal places.) 1.15 minutes d) What is the probability that a guest waits more than 4 minute(s) for an elevator? (Round to 3 decimal places.) 0.350 e) What wait time is exceeded by only 12% of the elevator wait times? (Round to 2 decimal places.) minutes