3. Reconsider Eddie's Bicycle Shop described in the preceding problem. Forty percent of the bicycles require only a minor repair. The repair time for these bicycles has a uniform distribution between zero and one hour. Sixty percent of the bicycles require a major repair. The repair time for these bicycles has a uniform distribution between one hour and two hours. You now need to estimate the mean of the overall probability distribution of the repair times for all bicycles by using the following alternative methods