Question

An appliance manufacturer offers extended warranties on its washers and dryers. Based on past sales, the manufacturer reports that of customers buying both a washer and a dryer, 52% purchase the extended warranty for the washer, 49% purchase the extended warranty for the dryer, and 61% purchase at least one of the two extended warranties.

(a)

Use the given probability information to set up a hypothetical 1,000 table. (Let W be the event that the customer purchases an extended warranty for the washer. Let D be the event the customer purchases an extended warranty for the dryer.)

	D	Not D	Total
W
Not W
Total			1,000

(b)

Use the table from part (a) to find the following probabilities.

(i)

the probability that a randomly selected customer who buys a washer and a dryer purchases an extended warranty for both the washer and the dryer

(ii)

the probability that a randomly selected customer purchases an extended warranty for neither the washer nor the dryer

Answer 1