According to a survey of American households, the probability that the residents own 2 cars if
Annual household income is over $50,000 is 80%.Of the households surveyed, 60% had incomes
Over $50,000 and 70% had 2 cars.The probability that the residents do not own 2 cars if annual
Household income is not over $50,000 is:
A) 0.12
B) 0.18
C) 0.45
D) 0.70

Question

Quizplus · Accepted Answer

The probability that the residents do not own 2 cars if annual household income is not over $50,000 is 1 - the probability that the residents own 2 cars if annual household income is not over $50,000. The probability that the residents own 2 cars if annual household income is not over $50,000 is 1 - the probability that the residents do not own 2 cars if annual household income is not over $50,000. The probability that the residents do not own 2 cars if annual household income is not over $50,000 is 1 - the probability that the residents own 2 cars if annual household income is over $50,000. The probability that the residents own 2 cars if annual household income is over $50,000 is 80%. Therefore, the probability that the residents do not own 2 cars if annual household income is not over $50,000 is 1 - 80% = 20%.

According to a Survey of American Households, the Probability That