Tony works in a factory that produces 1,000 computers each day. When 50 computers were sampled, it was found that 7 were defective. Estimate how many defective computers are made each day.
1. 140
2. 7
3.
4.
169 265
7/50 = 0.14 = 14%
0.14 * 1,000 = ?
140 is your answer
To estimate the number of defective computers made each day, we can use the concept of proportion. We know that 50 computers were sampled and 7 were found to be defective.
To set up the proportion, we can say:
(defective computers in sample) / (total computers in sample) = (defective computers made each day) / (total computers made each day)
Plugging in the numbers we have:
7 / 50 = (defective computers made each day) / 1000
Now we can solve for (defective computers made each day):
Cross-multiplying the equation:
7 * 1000 = 50 * (defective computers made each day)
7000 = 50 * (defective computers made each day)
Dividing both sides by 50:
7000 / 50 = defective computers made each day
The answer is 140 defective computers each day.
Therefore, the correct choice is: 1. 140