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 twenty-five customers buy gasoline at this station. what is the probability that at least ten pay in cash?

0.6535

Step-by-step explanation:

Given that during a one-hour period twenty-five customers buy gasoline at this station.

Let X be the no of persons out of these 25 who pay by cash.

X has two outcomes and each trial is independent of other.

Hence X is binomial (n=25, p=0.40)

Required probability

=

=0.6535

i'm not sure i quite understand, could you provide more information?