4-130.The CPU of a personal computer has a lifetime that is

4-130.The CPU of a personal computer has a lifetime that is exponentially distributed with a mean 4-130.The CPU of a personal computer has a lifetime thatis exponentially distributed with a mean lifetime of six years.You have owned this CPU for three years.What is the probabilitythat the CPU fails in the next three years?4-131.Continuation of Exercise 4-130.Assume that yourcorporation has owned 10 CPUs for three years,and assumethat the CPUs fail independently.What is the probability thatat least one fails within the next three years?