probability3

probability3 - Four Major Types of Yields AverageYield=90...

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1 stat-prob3 - Mike Pore - Sept 2000 Four Major Types of Yields Four Major Types of Yields Wafer Processing Yield Average Yield = 90% Wafer Probe Yield Average Yield = 50% Assembly Yield Average Yield = 90% Final Test Yield Average Yield = 80%

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2 stat-prob3 - Mike Pore - Sept 2000 Four Major Types of Yields Four Major Types of Yields P (Wafer Processing Yield) = P(W)= .9 P (Wafer Probe Yield) = P(X W)= .5 P (Assembly Yield) = P(Y W,X)= .9 P (Final Test Yield) = P(Z W,X,Y)= .8 P (Total Yield) = P(W)   P(X W)   P(Y W,X)   P(Z W,X,Y)       = (.9) (.5) (.9) (.8) = .324
3 stat-prob3 - Mike Pore - Sept 2000 Defects in a Lot Defects in a Lot A lot has 8 good parts and 4 defective  parts.   We draw a sample of two at random.   What is the probability of … P(G 1 , G 2 ) = 1 2

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4 stat-prob3 - Mike Pore - Sept 2000 Defects in a Lot Defects in a Lot A lot has 8 good parts and 4 defective parts.  We draw a  sample of two at random.  What is the probability of … P(G 1 , G 2 ) = P(G 1  P(G 2 G 1 ) = 8/12   7/11 = 14/33 1 2 1 2 1
5 stat-prob3 - Mike Pore - Sept 2000 System Reliability System Reliability Denote the probabilities that the events A, B, and C fail as  F , F , and F C  respectively. Denote each component reliability as R i  = 1 - F i     i = A,B,  C. System 1 has all three components in a series:  the  system fails if any one component fails. B C A

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6 stat-prob3 - Mike Pore - Sept 2000 System Reliability System Reliability Denote the probabilities that the events A, B, and C fail as  F , F , and F C  ,respectively. Denote each component reliability as R i  = 1 - F i     i = A,B,  C. System 2 has all three components in parallel:  the  system fails only if all three component fails. F S  = F   F   F or R = 1 - (1-R A )(1 - R B )(1- R C B C A
stat-prob3 - Mike Pore - Sept 2000 System Reliability System Reliability Complex Systems:  System 3 consists of seven units:  A,  B, C, D, E, G, H.  For the system to function, unit A and   either unit B or C and  either D and E together or G and H  together must be working. 1.  Draw the circuit for this setup.

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This note was uploaded on 04/26/2010 for the course ECO 329 taught by Professor K during the Spring '08 term at University of Texas.

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probability3 - Four Major Types of Yields AverageYield=90...

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