There a flu epidemic that is spreading across SF County. You are a principle and are in charge of 32 teachers. You want to plan ahead and be able to estimate how many substitute teachers the school may need during this epidemic. The probability that a San Francisco resident will become ill is 0.23. We are interested in the number of High School teachers that will become ill.
(a) What is probability that 5 teachers will get the flu?
(d) What is the probability that at least 2 teachers will get the flu?
(e) What is the expected number of teachers that will become sick? How many substitute teachers will you have ready during the flu epidemic? Why?