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A design criterion for an experiment requires that the combined standard uncertainty in a measured pressure be 5 % or less based upon 95 % confidence It is known from a previous experiment conducted

A design criterion for an experiment requires that the combined standard uncertainty in a measured pressure be 5 % or less based upon 95 % confidence. It is known from a previous experiment conducted in the same facility that the pressure varies slightly under ‘fixed’ conditions, as determined from a sample of 61 pressure measurements having a standard deviation of 2.5 kPa and mean of 90 kPa. The accuracy of the pressure measurement system, as stated by the manufacturer, is 3 %. Determine the value of the smallest division (in kPa) that the pressure indicator must have to meet the design criterion.

Jul 26 2020 View more View Less

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