Question

In a batch of 1130 calculators, 10 were found to be defective. A calculator is chosen at random. What is the chance that it is a defective calculator? Round your answer to the nearest 0.1%, if necessary.

Answer 1

Out of 1130 calculators, 10 are defective; therefore, the empirical probability of choosing a defective calculator is

$P(defective)=\frac{10}{1130}=\frac{1}{113}=0.00884...\approx0.9\%$

Thus, the rounded answer is 0.9%