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Assume that you are producing rings and you are measuring the diameter of each product. We...

Assume that you are producing rings and you are measuring the diameter of each product. We know that the diameter should fall between 100 and 129. Assume that you get n samples and measure the diameter for the samples and you get the results as x̅=122 and s=8. Assume that the diameter is normally distributed and n equals 30. Based on the information given,

  1. Calculate the Cpk.
  2. Calculate a 95% confidence interval on Cpk.
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