Question: On a typical day, your clothing store takes care of 2.6 "special customers" on average. These customers are taken directly to a special room in the back, are assigned a full-time server, are given tea (or espresso) and scones, and have clothes brought to them. You may assume that the number who will arrive tomorrow follows a Poisson distribution.
a. Find the standard deviation of the number of special customers.
b. Find the probability that no special customers arrive tomorrow.
c. Find the probability exactly four special customers will arrive tomorrow.