A type of seed is sold in packets which contain ten seeds each. On the average, it is found that a seed per packet does not germinate. Find the probability that a packet chosen at random contains less than two seeds which do not germinate. A random variable X has a Poisson distribution with P(X = 0) = P(X =1) . Find E ( X. ) People arrive at random and independently at a post office at an average rate of two people every 5 minutes. Find the probability that three people arriving in a 10-minute period, more than four people arriving in a half-hour period, five people arriving in a 4-minute period, one person arriving in a 1-minute period