Suppose you choose an American household at random and let the random variable X be the number of cars (including SUVs and light trucks) that they own. Here is the probability model if we ignore the few households that own more than 5 cars. Number of cars, X 0 1 2 3 4 5
Probability 0.09 0.36 0.35 0.13 0.05 0.02
What percent of households have more than 2 cars?
a. 55%
b. 45%
c. 20%
d. 85%
e. 90%