4) Describe how to use rejection sampling to sample from a distribution mi(x) where Ti(X) is only known up to a normalization constant. What is the rejection rate of the sampler? Suppose T(x) = (1/Z)e -x 4 defined over -1 s x $ 1. Select a sampling distribution g(x) and implement a rejection sampler. Hence estimate [ xxn(x), _ xx 2n(x) and the variance of ()). Plot this for m = 10, 20, 30 samples. What is the rejection rate