At the end of the LED lamp production period, 100 samples were taken, it turned out that there were 20 defective lamps.

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answerhappygod
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At the end of the LED lamp production period, 100 samples were taken, it turned out that there were 20 defective lamps.

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At the end of the LED lamp production period, 100 samples weretaken, it turned out that there were 20 defective lamps. From thenormal distribution table, it is obtained that P(Z < 1.96)=0.975and P(Z<1.645)=0.95. The interval estimator for the proportionof defective lighting products at the 95% confidence level, is
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