A simple random sample of electronic components wil be selected to test for the mean lifetime in hours. Assume that component lifetimes are normally distributed with population standard deviation of 16 hours. How many components must be sampled so that a 99% confidence interval will have margin of error of 3 hours

-14 is the answer

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the answer is  

a.

4,624π mm2

step-by-step explanation:

answer: i dont know but if you try hard you will get it right : )

step-by-step explanation:

explanation:

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