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CSSGB · Question #44

Calculate the theoretical process yield using the normal distribution. Is this a reasonable calculation? If yes, why? If no, why not? Answer: ZLSL= (5.95 - 6.024)/ 0.01139 = -6.4969, hence, P( X < -6.

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Question

Calculate the theoretical process yield using the normal distribution. Is this a reasonable calculation? If yes, why? If no, why not? Answer:

ZLSL= (5.95 – 6.024)/ 0.01139 = -6.4969, hence, P( X < -6.4969) = 0.0000 ZUSL= (6.05 – 6.024)/ 0.01139 = 2.2827, hence, P( X > -2.2827) = 0.0112 P (5.95 ≤ X ≤ 6.05) = 0.0000 + 0.0112 = 0.0112 The above calculation is not reasonable because the process is not in statistical control. The above calculation is not reasonable because the process is not in statistical control.

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  • AZLSL= (5.95 - 6.024)/ 0.01139 = -6.4969, hence, P( X < -6.4969) = 0.0000 ZUSL= (6.05 - 6.024)/ 0.01139 = 2.2827, hence, P( X > -2.2827) = 0.0112 P (5.95 ≤ X ≤ 6.05) = 0.0000 + 0.0112 = 0.0112 The above calculation is not reasonable because the process is not in statistical control. The above calculation is not reasonable because the process is not in stati

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Topics

#normal distribution#Z-score#theoretical yield#process stability
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