1)Suppose x1, x2, . . . , xn are the numbers of independent requests arriving at a web server during each of n successive minutes. Under the assumption that these numbers are independent samples from a Poisson distribution with unknown rate per minute, what is the maximum likelihood estimator for ?

2) Is your estimator from 1) unbiased? Justify your answer.

Please, show steps in detail with explanations so that I can walk through.