Question

1. in a batch of 960 calculators, 8 were found to be defective. what is the probability that a calculator chosen at random will be defective? write the probability as a percent. round to the nearest tenth of a percent if necessary. 74.4% 99.2% 0.8% 1.1%

Explanation:

Step1: Calculate the probability

The formula for probability is \(P=\frac{\text{Number of defective calculators}}{\text{Total number of calculators}}\).
Here, the number of defective calculators is \(8\) and the total number of calculators is \(960\). So, \(P = \frac{8}{960}\).

Step2: Convert to percentage

To convert the fraction to a percentage, we use the formula \(P(\text{percentage})=\frac{8}{960}\times100\%\).

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Answer:

\(0.8\%\)