David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash. During a one-hour period,15 customers buy gasoline at this station. What is the probability that all 15 pay in cash?
A)0.0
B)0.1
C)0.9
D)1.0

Question

Quizplus · Accepted Answer

The probability that all 15 customers pay in cash is $0.4^{15}$, which is a very small number, much less than 0.1, thus closest to 0.0.

David's Gasoline Station Offers 4 Cents Off Per Gallon If