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(1) The molecular weight of a particular polymer

EMIS 5364/STAT 5344 Homework 5. (1) The molecular weight of a particular polymer should fall between 2100 and 2350. Fifty samples of this material were analyzed with the results x = 2275 and S = 60. Assume that molecular weight is normally distributed.

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(1) The molecular weight of a particular polymer

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  1. EMIS 5364/STAT 5344Homework 5 (1) The molecular weight of a particular polymer should fall between 2100 and 2350. Fifty samples of this material were analyzed with the results x = 2275 and S = 60. Assume that molecular weight is normally distributed. (a) Calculate a point estimate of CpK. (b) Find a 95% confidence interval on CpK. Estimate of CpK

  2. EMIS 5364/STAT 5344Homework 5 (2) A company has been asked by an important customer to demonstrate that its process capability ratio Cp exceeds 1.33. It has taken a sample of 50 parts and obtained the point estimate of Cp = 1.52. Assume that the quality characteristic follows a normal distribution. (a) Can the company demonstrate that Cp exceeds 1.33 at the 95% confidence? (b) What level of confidence would give a one- sided lower confidence limit on Cp that exceeds 1.33? Demonstrated Cp ^

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