Answer:
There were a total of 65 + 2 + 9 = 76 customers in the last week. The probability of the next customer paying with a debit card is the number of customers who paid with a debit card divided by the total number of customers:
2/76
This fraction can be simplified by dividing both the numerator and denominator by 2:
1/38
So the probability of the next customer paying with a debit card is 1/38.
Explanation: