Question 450570
A box contains 5 dozen heads of lettuce. There are eight spoiled heads in the box. A person chooses a dozen heads at random. 
a) What is the expected number of spoiled heads that will be chosen? 
b) What is the probability that he did not choose any of the spoiled heads? 
.
a) 8/60 * 12 = 8/5  the expected number of spoiled heads that will be chosen.
.
b)
52C12/60C12 = .1475
.
Ed