a) Use Wald’s equality to compute the expected number of trials of a Bernoulli process up to and including the kth success. b) Use elementary means to find the expected number of trials up to and...

a) Use Wald’s equality to compute the expected number of trials of a Bernoulli process up to and including the kth success.

b) Use elementary means to find the expected number of trials up to and including the first success. Use this to find the expected number of trials up to and including the kth success. Compare with part a).