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A process for manufacturing an electronic component yields items of which 2% are defective. A quality control plan is to select 1000 items from the process, and if none are defective, the process continues. Use the normal approximation to the binomial distribution, the mean and the variance of the normal distribution should be

A- mean=980 variance=14

B- mean=980 standard deviation=19.6

C- mean=20 standard deviation=19.6

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Category:- Statistics and Probability
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