Fifteen percent of sport/compact cars are dark green (based on data from DuPont Automotive). Assume that 50 sport/compact cars are randomly selected.
a. What is the expected number of dark green cars in such a group of 50?
b. In such groups of 50, what is the mean number of dark, green cars?
c. In such groups of 50, what is the standard deviation for the number of dark green cars?
d. Is it unusual to get 15 dark green cars in such a group? Why or why not?
e. Find the probability that there are exactly 9 dark green cars in such a group of 50.