Parts exiting an assembly line are inspected and categorized as good or bad (defective). In a batch of 100 parts, 8 were found to be defective.
What is the probability that a part drawn at random is defective?

0.2

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0.02

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0.08

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0.8

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Solution

The correct option is C
0.08

Number of parts exiting an assembly line which are bad(defective) = 8

Total number of parts passing the assembly line = 100

Probability of part being defective $= \frac{Number of defective parts}{Total number of parts}$

Probability of a part being defective $= \frac{8}{100} = 0.08$

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