Using it's concept, it is found that there is a 0.054 probability that the next customer will pay with a credit card.
A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, out of 56 + 14 + 4 = 74 customers, 4 used credit cards, hence:
p = 4/74 = 0.054.
There is a 0.054 probability that the next customer will pay with a credit card.
More can be learned about probabilities at https://brainly.com/question/14398287