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Question 10.14: Refer to Example 10.13. To what value must the process stand...

Refer to Example 10.13. To what value must the process standard deviation be reduced in order for the process to attain six-sigma quality?

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To attain six-sigma quality, the value of C_p must be at least 2.0. The value of a for which this occurs is found by setting C_p = 2.0 and solving for σ. We obtain

2.0=\frac{52-48}{6 \sigma}

from which σ = 0.33.

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