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  1. R

    Certified lean Sig Sigma black belt | Prakash | June 20th - Jul 14th

    Thank you that is very helpful. I'll probably have more questions shortly. I appreciate your explanation.
  2. R

    Certified lean Sig Sigma black belt | Prakash | June 20th - Jul 14th

    Hello Prakash, That is very helpful. So by looking at your calculations npbar ( average/centerline) can be calculated by multiplying proportion (pbar) * batch size. Is this always the case that proportion * batch size will equal the average?
  3. R

    Certified lean Sig Sigma black belt | Prakash | June 20th - Jul 14th

    Hello Prakash, To follow up with my question in class. There is a problem I'm struggling to solve. The number of defective items counted in a batch of 250 is , on an average, found to be 28. What are the control limits? This is the only information given. it is an np- chart calculation. p...
  4. R

    Certified lean Sig Sigma black belt | Prakash | June 20th - Jul 14th

    Thank you for the further explanation.
  5. R

    Certified lean Sig Sigma black belt | Prakash | June 20th - Jul 14th

    Hello Prakash, I was hoping you could provide some clarification on when to use certain hypothesis testing set ups. In particular if there is improvements made to a process and wanting to compare the new results mean against a target mean. The sample size is less than 30 and the population...
  6. R

    Certified lean Sig Sigma black belt | Prakash | June 20th - Jul 14th

    For the gradable project when there is some information not given ( example of Hotel Coopergates ) there is a CEO mentioned and the black belt Mr. Bond but no other people. Do we just make up people but put job description ( ex: green belt, hotel clerk...) to be part of the project charter and...
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