2. Suppose that n balls are distributed into n boxes so that all of the na possible arrangements are equally likely. We
Posted: Mon Apr 11, 2022 6:30 am
2. Suppose that n balls are distributed into n boxes so that all of the na possible arrangements are equally likely. We would like to compute the probability that only box 1 is empty. Let A be the event that only box 1 is empty. Let B; be the event that box j, j = 2, ..., n, has two balls, box 1 has no balls, and remaining (n - 2) boxes have exactly one ball each. (a) Express A in terms of B;. (5 points) (b) Compute P(B;). (10 points) (c) Compute P(A) from (a) and (b). (10 points)