The number of pieces of mail received by a certain household per day is a Poisson distributed random variable with parameter μ = 2.0. a) Find the probability that the household receives no pieces of...

The number of pieces of mail received by a certain household per day is a Poisson distributed random variable with parameter μ = 2.0. a) Find the probability that the household receives no pieces of mail today. b) Find the probability that the household receives three or more pieces of mail today