The times before failure of integrated circuits used in calculators: 99% confidence; n = 25 x =
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The times before failure of integrated circuits used in calculators: 99% confidence; n = 25 x = 112 hours σ is known to be 18.6 hours, and the distribution of all times before failure is far from normal.
Find the margin of error and confidence interval if the necessary requirements are satisfied. If the requirements are not all satisfied, state that the margin of error and confidence interval cannot be calculated using the methods of this section.
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