Six Sigma Green Belt Certification Practice Exam

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Prepare for your Six Sigma Green Belt Certification Exam with confidence. This exam is a critical step in enhancing your career prospects in quality management and process improvement. Tackle interactive questions with hints and explanations and ace your certification!

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Your manufacturing process has following yields: Step 1: 98%, Step 2: 95%, Step 3: 87%, Step 4: 90%, Step 5: 75%. What is the rolled throughput yield (RTY) of this process?

  1. 54.7%

  2. 55.0%

  3. 89.0%

  4. 45.3%

The correct answer is: 54.7%

To calculate the rolled throughput yield (RTY), you multiply the individual yields of each step in the process together. This captures the overall efficiency of the entire process, considering that each step's yield affects the subsequent steps. The formula for RTY is as follows: RTY = Yield Step 1 × Yield Step 2 × Yield Step 3 × Yield Step 4 × Yield Step 5 Expressing the yields as decimals: - Step 1: 98% = 0.98 - Step 2: 95% = 0.95 - Step 3: 87% = 0.87 - Step 4: 90% = 0.90 - Step 5: 75% = 0.75 Now, multiplying these together: RTY = 0.98 × 0.95 × 0.87 × 0.90 × 0.75 Calculating this step-by-step: 1. 0.98 × 0.95 = 0.931 2. 0.931 × 0.87 = 0.810 3. 0.810 × 0.90 = 0.729

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