Problem 3 : A discrete-event simulation for the repair time for a system has been created. The simulation was run 400 times and the following data was collected: The mean was 10.21 hours, the minimum =6.65 hours, the maximum =11.99 hours. The "bin" labels are the upper bounds on the bin, i.e., bin 9.0 runs from 8.0 to 9.0 hours. a) What is the probability that the repair will be done in 9 hours or less? b) What is the probability that the repair will take between 9 and 11 hours