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A process (assumed to be normally distributed) has the process mean of 34 with a process...

A process (assumed to be normally distributed) has the process mean of 34 with a process standard deviation of 7. When the specifiction limits are [10, 48], what is the proportion of defects due to oversize? (parts being too big) (note: return numbers not percentage, for example, write 0.50, not 50 or 50%)

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Answer #1

PROBABILITY OF BEING OVER 48:
Z-USL = (UPPER LIMIT - MEAN) / STDEV = (48 - 34) / 7 = 2 = PROBABILITY = 1 - NORMSDIST(Z-USL) = 1 - NORMSDIST(2) = 0.02275

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