CA Foundation · Quantitative Aptitude · Probability
A company manufactures electronic components with a defect rate of 5%. If a batch of 100 components is inspected, what is the probability that a randomly selected component from this batch is defective?
The probability that a randomly selected component is defective equals the defect rate expressed as a decimal. Since the defect rate is 5%, the probability is 0.05 or 5/100.
- A0.05Correct
- B0.5
- C5
- D0.005
Explanation
The defect rate is given as 5%, which means 5 out of 100 components are defective. The probability is simply the defect rate expressed as a decimal: 5% = 5/100 = 0.05. Option 0.5 confuses 5% with 50%, while 5 represents the count not the probability, and 0.005 represents 0.5%.
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