Carlson Jewelers permits the return of their diamond wedding rings, provided the return occurs within two weeks of the purchase date. Their records reveal that 10 percent of the diamond wedding rings are returned. Five different customers buy five rings. What is the probability that none will be returned?
A) 0.250
B) 0.073
C) 0.590
D) 0.500
E) 0.372

Question

Quizplus · Accepted Answer

The probability of a ring not being returned is 0.9. The probability of none of the five rings being returned is 0.9^5 = 0.590.

Carlson Jewelers Permits the Return of Their Diamond Wedding Rings