Show transcribed image text ls Window Help 162% in 1. Select integrated circuits, test them in sequence until you find the first failure, and then stop. Let N be the number of tests. All tests are independent with probability of failure p 0.1. Consider the condition B = {N > 20} . Find the PMF fN(n). Find fNIB(n), the conditional PMF of N given that there have been 20 cons tests without a failure. . What is ENIB 3], the expected nuumber of tests given that there have been 20 con- secutive tests without a failure? 2. The time between telephone calls at a telephone switch is an exponential random variable T with expected value 0.01. Given T0.02, . What is the conditional PDF fTIT002()? . What is EITIT0.02], the conditional expected value of T? 13:3439
ls Window Help 162% in 1. Select integrated circuits, test them in sequence until you find the first failure, and then stop. Let N be the number of tests. All tests are independent with probability of failure p 0.1. Consider the condition B = {N > 20} . Find the PMF fN(n). Find fNIB(n), the conditional PMF of N given that there have been 20 cons tests without a failure. . What is ENIB 3], the expected nuumber of tests given that there have been 20 con- secutive tests without a failure? 2. The time between telephone calls at a telephone switch is an exponential random variable T with expected value 0.01. Given T0.02, . What is the conditional PDF fTIT002()? . What is EITIT0.02], the conditional expected value of T? 13:3439





