Consider the quality of the following 4 step process: Step A (out of 100 good units to begin with) 100 good units are sent to B including 10 repaired units. 0 units are scrapped at step A FPY(FirstPassYield)=[100unitsreceived(10repaired+0scrap)]/100=90/100=0.90 Step B (Out of 100 units recd from A) 90 good units are sent to C including 6 repaired units. 10 units are scrapped at Step B FPY=[100unitsreceivedfromA(6repaired+10scrap)]/100=(10016)/100=0.84 Step C (Out of 90 good units recd from B) 87 good units are sent to D including 9 repaired units. 3 units are scrapped at C FPY= ? Step D (Out of 87 good units recd from C), 80 good units come out of D including 6 repaired units. 7 units are scrapped at D FPY = ? Answer the next 3 questions based on the above information: 27. The FPY of Step D is approx: a) 0.92 b) 0.85 c) 0.86 d) 0.95 28. The RTY (Rolled Throughput Yield = multiplicative function of step yields) of the process is: a) 56% b) 60% c) 49% d) 70% 29. The 'hidden factory' in the process is likely to be working the least at which step of the process? Assume repair costs would be identical at each step (if estimated). ('Hidden' factory processes repairs only - typically done informally by workers who often help out each other - no costing is done for labor or materials) (Hint: Compute proportion of repairs done on arriving input units, for each step, and find minimum) a) Step A b) Step D c) Step C d) Step B 30. Applying the weighted criteria project selection method to the evaluation of multiple possible competing 6 sigma projects resulted resulted in the foll: Pick the best course of action: a) Choose project A b) Remove projects C and D from further consideration c) Reject all the projects