Sixty percent of the customers of a fast food chain order a hamburger, french fries and a drink. If a random sample of 15 cash register receipts is selected, what is the probability that 10 will show that the above three food items were ordered?
A) .1859
B) 0.7827
C) 0.2066
D) 0.2173
E) 0.4032

Question

Quizplus · Accepted Answer

This is a binomial probability problem where n = 15, k = 10, and p = 0.6. The probability is calculated using the binomial probability formula: P(X = k) = C(n, k) * p^k * (1-p)^(n-k). Plugging in the values gives the probability of approximately 0.1859.

Sixty Percent of the Customers of a Fast Food Chain