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For a group of 40 specimens, the mean diameter is found to be 9.24 mm and...

For a group of 40 specimens, the mean diameter is found to be 9.24 mm and a standard deviation is 0.18 .estimate the mean diameter for this group of the specimen with 95 % confidence. In this measurement. if it is known that there is a systematic error of 0.1 mm, determine the total uncertainty with 95 % confidence interval

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