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Inspected for a specific dimension

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Question: A sample of 50 parts are inspected for a specific dimension with a resulting average of 2.22 and s = 0.67. What are the expected limits (lower and upper) of variation consuming 68% of the curve--assuming a normally-distributed process?

A. 1.55 and 2.89
B. 2.000 and 2.440
C. 0.570 and 0.829
D. Not enough information

Reference no: EM131115788

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