Elly's hot dog emporium is famous for its chilidogs. Some customers order the hot dogs with hot peppers, while many do not care for that added bit of zest. Elly's latest sales indicate that 30% of the customers ordering her chili dogs order it with hot peppers. Suppose 18 customers are selected at random. What is the probability that between two and five people inclusive want hot peppers?
A) 0.0000
B) 0.708
C) 0.015
D) 0.521
E) 0.80

Question

Quizplus · Accepted Answer

The probability can be calculated using the binomial probability formula. The probability of 2 to 5 customers inclusive wanting hot peppers is the sum of the probabilities for 2, 3, 4, and 5 customers, which results in approximately 0.521.

Elly's Hot Dog Emporium Is Famous for Its Chilidogs