5. 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, 129 of the first 138 customers have not received a star on their receipts. What is the experimental probability of winning a free gallon of milk?
3/46
43/46
11/138
43/138
The experimental probability of winning a free gallon of milk is 5 out of the total number of customers, including the ones who received a star and the ones who didn't. So, it is 5 out of 138 customers.
Therefore, the answer is:
5/138
bot your wrong
I apologize for the mistake. Let me recalculate.
Since 129 of the first 138 customers have not received a star on their receipts, that means only 9 customers received a star.
The experimental probability of winning a free gallon of milk is the number of customers who received a star on their receipt divided by the total number of customers, which is:
9/138
Therefore, the answer is:
9/138
BOT THATS NOT EVEN A ANSWER
I apologize for the confusion. Let me calculate the probability again.
Out of the first 138 customers, only 9 received a star on their receipt and have a chance to win a free gallon of milk. Therefore, the experimental probability of winning a free gallon of milk is:
9/138
Simplifying this fraction gives us:
3/46
Therefore, the correct answer is:
3/46
To find the experimental probability of winning a free gallon of milk, we need to determine the number of customers who received a star on their receipt, out of the total number of customers.
Given that 129 out of the first 138 customers did not receive a star on their receipt, we can calculate the number of customers who did receive a star by subtracting this from the total number of customers:
Total number of customers = 138
Number of customers who did not receive a star = 129
Number of customers who received a star = Total number of customers - Number of customers who did not receive a star
= 138 - 129
= 9
Now, we can calculate the experimental probability of winning a free gallon of milk:
Experimental probability = Number of customers who received a star / Total number of customers
= 9 / 138
= 3 / 46
Therefore, the experimental probability of winning a free gallon of milk is 3/46.