SOLUTION: A sample of 10 television tubes produced by a company showed a mean lifetime of 1200 hours and a standard deviation of 100 hours. Estimate (a) the mean, (b) the standard deviation

Question 864989: A sample of 10 television tubes produced by a company showed a mean lifetime of 1200 hours and a standard
deviation of 100 hours. Estimate (a) the mean, (b) the standard deviation of the population of all television tubes
produced by this company.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A sample of 10 television tubes produced by a company showed a mean lifetime of 1200 hours and a standard deviation of 100 hours.
Estimate
a) the mean:: A point estimate of the mean = 1200 hrs
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(b) the standard deviation:: Since s = u/sqrt(10), u = s*sqrt(10) = 100sqrt(10)
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of the population of all television tubes
produced by this company.

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