Question

Mary works in a factory that produces 1,000 telephones each day. When 30 telephones were sampled, it was found that 9 were defective. Estimate how many telephones are defective each day.

Answer 1

300 telephones

Explanation:

First, divide 30 from 9 (or write the 9 out of 30 as a probability), making it look like this: 9/30. This equals 0.3. Then write the percentage/decimal into a general percent equation (y is x% of z).

0.3 X 1000. your result should be 300.

Answer 2

about 300 would be defective each day