What’s the expected number of cars in a randomly selected American household?

a. 1.00

b. 1.75

c. 1.84

d. 2.00

e. 2.50

Choose an American household at random and let the random variable X be the number of cars (including SUVs and light trucks) they own. Here is the probability distribution if we ignore the few households that own more than 5 cars:

Select the best answer.

Transcribed Image Text:

Number of cars 1 2 3 4 5 Probability 0.09 0.36 0.35 0.13 0.05 0.02