WORKBOUK ASSIGNMENT 3: A SIMPLE PARAMETER ESTIMATION A type of network router has a bandwidth total to rst hardware failure called 5 expressed in terabytes. The random variable 5 is modelled by an exponential distribution whose density is given by: s{t) = gs\"; with a single parameter 3. Consider the bandwidth total to failure T of the sequence of the two routers of the same type {one being brought up automatically when the rst is broken}. Express Tin terms of the bandwidth total to failure of single routers 51 and $2. Formulate realistic assumptions about these random variables. Calculate the density function of the variable 1". Given an experiment with the dual-router-system yielding a sample 1", , T2, 1",, . calculate the likelihood function for E. Propose a transformation of this likelihood function whose maximum is the same and can be computed easily. An actual experiment is performed, the infrastructure team has obtained the following bandwidth totals to failure: 9.2, 5.6, 13.4.111, 10.? Estimate the model-para meter with the maximum likelihood and compute the expectation of the bandwidth total to failure of the dual-rou ter-system