Mathematics, 29.07.2019 23:10 hardwick744
He standard deviation of the lifetimes of a sample of 200 electric light bulbs was computed to be 150 hours. find (a) 95% and (b) 99% confidence intervals for the standard deviation of all such light bulb
Answers: 2
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He standard deviation of the lifetimes of a sample of 200 electric light bulbs was computed to be 15...
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