Layla owns a small business selling clothing. She knows that in the last week 52 customers paid cash, 20 customers used a debit card, and 11 customers used a credit card Based on these results, express the probability that the next customer will pay with something other than a credit card as a decimal to the nearest hundredth.
To find the probability that the next customer will not pay with a credit card, we need to add the number of customers who paid with cash and debit cards and divide by the total number of customers.
Total number of customers = 52 (cash) + 20 (debit card) + 11 (credit card) = 83
Number of customers who did not use a credit card = 52 (cash) + 20 (debit card) = 72
Probability that the next customer will pay with something other than a credit card = 72 / 83 ≈ 0.867
Therefore, the probability that the next customer will pay with something other than a credit card is approximately 0.87.