docsgooglecom Untitled documentisoogle Docs 7 ll u 1, l; A\" ll M l l 6. When observing a checkout line at a food store, the average number of people served is 30 per hour. Poisson Distribution (a) what is the probability that 20 people check out in any given hour? 0.0134 (b) what is the probability that no (zero) people check out in any given hour? (0) what is the probability that at most 15 people check out in any given hour? (d) what is the mean of a Poisson distribution