ian owns a small business selling used books. he knows that in the last week 122 customers paid cash, 14…

ian owns a small business selling used books. he knows that in the last week 122 customers paid cash, 14 customers used a debit card, and 4 customers used a credit card. based on these results, express the probability that the next customer will pay with cash or a credit card as a decimal to the nearest hundredth.

ian owns a small business selling used books. he knows that in the last week 122 customers paid cash, 14 customers used a debit card, and 4 customers used a credit card. based on these results, express the probability that the next customer will pay with cash or a credit card as a decimal to the nearest hundredth.

Answer

Explanation:

Step1: Calculate total number of customers

$122 + 14+4=140$

Step2: Calculate number of customers who paid cash or credit - card

$122 + 4=126$

Step3: Calculate the probability

The probability $P=\frac{126}{140}=0.90$

Answer:

$0.90$