Question: Problem Statement: An improvement project focused on reducing process variation. The specification limits on the characteristic of interest is 2.450 +/- 0.005. A sample of

Problem Statement: An improvement project focused on reducing process variation. The specification limits on the characteristic of interest is 2.450 +/- 0.005. A sample of size 50 from the improved process is taken with mean of 2.452 and standard deviation of 0.0015. Approximately, what percent of the characteristic is above the upper spec limit?

a. 4.56%

b. 2.28%

c. 42.17%

d. 1.14%

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