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Problem N5615 probability theory confidence interval

Problem N5615 probability theory confidence interval

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  • In control tests, n=17 was determined x̅=3000 hours. Assuming that the lamp life is normally distributed σ=21 hours, determine the width of the confidence interval for the general average with reliability γ=0.98

Additional information

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)