Click the icon to view the table of factors for calculating three-sigma limits for the x-chart and R-chart. Suppose that the specification for the bottle neck diameter is 0.6000.050 in. and the population standard deviation is 0.011 in. More Info Factors for calculating three-sigma limits for the x-chart and R-chart Suppose that the specification for the bottle neck diameter is 0.6000.050 in. and the population standard deviation is 0.011 in. a. What is the process capability index? The Cpk is (Enter your response rounded to two decimal places.) b. The process capability ratio? The Cp is . (Enter your response rounded to two decimal places.) c. If the firm is seeking four-sigma quality, is the process capable of producing the bottle? A. Yes, because Cpk is greater than the critical value of 1.33 . B. No, because Cpk is less than the critical value of 1.33 . C. Yes, because Cpk is less than the critical value of 1.33. D. No, because Cpk is greater than the critical value of 1.33