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19-11-2016
Mathematics

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430 randomly selected light bulbs were tested in a laboratory, 224 lasted more than 500 hours. Find a point estimate of the proportion of all light bulbs that last more than 500 hours

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syed514 syed514

20-11-2016

the estimated portion of light bulbs that last more than 500 hours will be
x=∑xn=224/430=0.521=52.1%

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