Question: The upper specification limit is 72 and the lower spec limit is 46. The quality manager has taken a sample of nineteen (19) product pieces

The upper specification limit is 72 and the lower spec limit is 46. The quality manager has taken a sample of nineteen (19) product pieces at random with a standard deviation of 1.95. The manager is being asked by the customer to provide a 98% Cp confidence interval for this process using the chi-squared statistical method. Show your results and your work.

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