Question: Measuring your personal capability (optional). Refer to Exercise 12.33, in which you collected 50 sequential observations on your ability to measure 5 seconds. Suppose we

Measuring your personal capability (optional). Refer to Exercise 12.33, in which you collected 50 sequential observations on your ability to measure 5 seconds. Suppose we define acceptable performance as 5 ± 0.15 seconds.

(a) Assume that the Normal distribution is sufficiently adequate to describe your distribution of times. Estimate the percent of stopwatch recordings that will meet specifications if your process remains in its current state.

(b) Estimate your personal Cp.

(c) Estimate your personal Cpk .

(d) Are your Cp and Cpk close in value? If not, what does that suggest about your stopwatch recording ability?

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