SOLUTION: if a random sample of 52 longlast light bulbs is chosen,find the probability that their mean life time is longer than 1620 hours

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Question 480222: if a random sample of 52 longlast light bulbs is chosen,find the probability that their mean life time is longer than 1620 hours
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
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