Exhibit 5-11.For a particular clothing store,a marketing firm finds that 16% of $10-off coupons delivered by mail are redeemed.Suppose six customers are randomly selected and are mailed $10-off coupons. Refer to Exhibit 5-11.What is the probability that at least two of the customers redeem the coupon?
A)0.2472
B)0.3513
C)0.4015
D)0.7528

Question

Quizplus · Accepted Answer

The probability of at least two customers redeeming the coupon is 1 minus the probability of none or one customer redeeming the coupon. The probability of none redeeming the coupon is (0.84)^6 = 0.2472. The probability of one redeeming the coupon is 6 * (0.16) * (0.84)^5 = 0.3513. Therefore, the probability of at least two redeeming the coupon is 1 - 0.2472 - 0.3513 = 0.4015.