a) Suppose that the Fiat 500e will only function if this battery module operates without error. It is decided that a number of these modules will be used in parallel to increase the probability that the overall car battery does not fail prior to the end of its initial warranty period of 4 years. Given that R(4) = 0.082, how many components need to be arranged in parallel for the probability that the system is still functioning at 4 years to be at least 0.85? b) Compute the hazard function for the system, and evaluate it at times t = 4 and t = 5