Question

A marketing firm surveyed consumers about their electronics purchases in the last year. The following data were obtained:

46 percent had purchased electronics in a specialty store

38 percent had purchased electronics in a discount store

44 percent had purchased electronics over the internet

15 percent had purchased electronics in both specialty and discount stores

18 percent had purchased electronics in a discount store and over the internet

10 percent had purchased electronics in specialty and discount stores and over the internet

7 percent had purchased electronics at none of these outlets

A consumer response is selected at random.   Find the probability that the consumer had purchased electronics at both specialty stores and over the internet.

Answer 1