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 of a household do not own 2 cars and have an income over $50,000 a year is:
A)0.12
B)0.18
C)0.22
D)0.48

Question

Quizplus · Accepted Answer

Given that 80% of households with an income over $50,000 own 2 cars, the probability that such households do not own 2 cars is 20% (100% - 80%). Since 60% of the surveyed households have incomes over $50,000, the probability that a household has an income over $50,000 and does not own 2 cars is 60% of 20%, which is 0.6 * 0.2 = 0.12.

According to a Survey of American Households,the Probability That the Residents