Food Express is running a special promotion in which customers can win a free gallon of milk which 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 experimental probability of winning a free gallon of milk?
A. 11/156
B. 49/52
C. 2/39
D. 3/52
Thanks!
im not positive but i think Reiny is correct!
To find the experimental probability of winning a free gallon of milk, we need to calculate the ratio of the number of customers who received a star on their receipt to the total number of customers.
From the information given, we know that out of the first 156 customers, only 9 of them received stars on their receipts (since 147 of the first 156 customers did not receive a star).
Therefore, the experimental probability of winning a free gallon of milk can be calculated as:
Experimental Probability = Number of customers with a star / Total number of customers
Experimental Probability = 9 / 156
We can simplify this ratio by dividing both the numerator and denominator by the greatest common divisor, which is 3:
Experimental Probability = 3 / 52
Hence, the correct answer is (D) 3/52.
Are we to assume that the other 9 customers did receive a star, thus are winners?
If so, then the prob of winning
= 9/156
= 3/52