During a promotion, Christina's department store offers a mailing "scratch a winner - discount savings." After customers select the items they wish to purchase, they scratch
Their discount sticker from the mailing to determine the discount they will receive. The
Scratch wheel is divided into 12 slices. Six slices are red and award a 10% discount,
Three slices are white and award a 20% discount, and two slices are blue and award a 40%
Discount. The remaining slice is gold and awards a 100% discount if the customer
Scratches that slice! The probability that two customers in a row get a 20% discount is
A) 3/12
B) 2/12
C) .0625
D) 9/12
E) 10/12

Question

Quizplus · Accepted Answer

The probability of one customer getting a 20% discount is 3/12 (since there are 3 white slices out of 12 total slices). The probability of two customers in a row both getting a 20% discount is (3/12) x (3/12) = 9/144 or .0625. Therefore, the answer is C.

During a Promotion, Christina's Department Store Offers a Mailing "Scratch