(30) You are simulating elevator operations in a high-rise building so you can test different strategies to reduce wait times. Elevator stops (pick-ups/drop-offs) are an important part of the simulation model. You observe a limited number of stops on a oor. The smallest stop time is 4 seconds, while the longest is 20 seconds. a. (5) What distribution should you use to model the stop times based on the information you have? Include parameters. b. (10) What is the probability of a stop lasting more than 15 seconds? c. (5) You have more time a few days later and gather additional information. The smallest and largest times do not change, but you know nd that most of the stops last right around 8 seconds. What distribution should you use now (with parameters)? (1. (10) How does the probability change for a stop lasting more than 15 seconds