A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population sta

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    math_celebrity Administrator Staff Member

    A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population standard deviation of the lifetime is 500 hours. Construct a 95% confidence interval estimate of the mean lifetime.

    2902 < u < 3098 using our confidence interval for the mean calculator
     
    math_celebrity, Jan 8, 2017
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