Chapter 6•Process Performance and Quality145.A manufacturer embarking on a Six Sigma program sets the goal of having true six-sigmacapability for all processes by the end of the month. If their current process capability ratio on akey metric is now 1.5; what must happen with the process standard deviation?a

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146.A manufacturer embarking on a Six Sigma program sets the goal of having true six-sigmacapability for all processes by the end of the month. If their current process capability ratio on akey metric is now 1.70; what must happen with the process standard deviation?d

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Reference:Process CapabilityDifficulty:ModerateKeywords:process, capability, standard, deviation, ratio147.A manufacturer embarking on a Six Sigma program sets the goal of having true six-sigmacapability for all processes by the end of the month. If their current process capability ratio on akey metric is now 1.25; what must happen with the process standard deviation?a. The process standard deviation must be reduced by about 25%.b. The process standard deviation must be reduced by about 37%.c. The process standard deviation must be reduced by about 50%.d. The process standard deviation must be reduced by about 67%.Answer:b

Reference:Process CapabilityDifficulty:ModerateKeywords:process, capability, standard, deviation, ratio