Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 147 of the first 156 customers have not received a star on their receipts. What is the experimental probability of winning a free gallon of milk?
There were 156 customers in total, and 147 of them did not receive a star on their receipt. Therefore, only 9 customers received a star on their receipt.
The experimental probability of winning a free gallon of milk is:
Number of customers who received a star / Total number of customers
9/156
Simplifying this fraction, we get:
0.0577
So the experimental probability of winning a free gallon of milk is approximately 0.0577, or 5.77%.