) Suppose that your business is operating at the four-and-a-half-sigma quality level (with 1350 ppm). If...
) Suppose that your business is operating at the four-and-a-half-sigma quality level (with 1350 ppm). If projects have an average improvement rate of 6%monthly, how many years will it take to achieve six-sigma quality (with 3.4 ppm)?
Homework Answers
AT Six Sigma, there will be 3.4 ppm
Currently there is 1350 ppm
Let assume in x month, business will achieve Six Sigma quality.
3.4 = 1350*(1-6%)^x
0.94^x = 3.4/1350
x = ln(3.4/1350)/ln(0.94)
x = 96.71 month
x = 8.06 years
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