THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
70% of the customers at the local ice cream shop order their ice cream on a sugar cone.Assume that the next ten customers order independently of one another.
-What is the probability that exactly seven of them order sugar cones?
A)0.2668
B)0.5000
C)0.6500
D)0.3500

Question

Quizplus · Accepted Answer

This is a binomial probability problem with n=10 and p=0.7. The probability of exactly 7 customers ordering sugar cones can be calculated using the binomial probability formula: P(X=7) = 10C7 * (0.7)^7 * (0.3)^3 = 0.2668. Therefore, the best choice is A.