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Found 8 results

  1. Q 303. In hypothesis testing, the permissible probabilities for errors are Alpha and Beta. The commonly used probabilities are 5% and 10-20% respectively. Provide examples where unusual values for Alpha and Beta are needed. Note for website visitors - Two questions are asked every week on this platform. One on Tuesday and the other on Friday. All questions so far can be seen here - https://www.benchmarksixsigma.com/forum/lean-six-sigma-business-excellence-questions/ Please visit the forum home page at https://www.benchmarksixsigma.com/forum/ to respond to
  2. Q 304. Both 2 Sample T and Paired T tests are used to compare averages for 2 samples. What is the advantage of using a Paired T test? Explain with examples. Note for website visitors - Two questions are asked every week on this platform. One on Tuesday and the other on Friday. All questions so far can be seen here - https://www.benchmarksixsigma.com/forum/lean-six-sigma-business-excellence-questions/ Please visit the forum home page at https://www.benchmarksixsigma.com/forum/ to respond to the latest question open till the next Tuesday/ Friday evening 5 PM as p
  3. Q. 163 Suggest an improvement/ enhancement in the guide to selection of Hypothesis Tests provided here - https://www.benchmarksixsigma.com/guide-to-right-hypothesis-test/ Note for website visitors - Two questions are asked every week on this platform. One on Tuesday and the other on Friday. All questions so far can be seen here - https://www.benchmarksixsigma.com/forum/lean-six-sigma-business-excellence-questions/ Please visit the forum home page at https://www.benchmarksixsigma.com/forum/ to respond to the latest question open till the next Tuesday/ Friday evenin
  4. Q. 160 Hypothesis Testing - Business Success for any company depends on Continuous Improvement(CI) . CI requires creating hypothesis and testing them frequently. Most organizations create and test hypothesis (do trials for new ideas or carry on small experiments). For some reason, most professionals do not carry out statistical testing of hypothesis on sample data and tend to rely on gut feeling. It is seen that most Green Belt professionals do not use it while they have been trained on it. What are the key reasons for lack of use of this powerful family of statistical tests? 
  5. You want output Y to improve and are looking for X that influences Y. Share examples when the outcome of a hypothesis test indicates statistical significance with respect to impact of X on Y but does not warrant a change in X
  6. Q. 139 In which phase of DMAIC, can hypothesis testing NOT be used? Explain with reasons. Note for website visitors - Two questions are asked every week on this platform. One on Tuesday and the other on Friday. All questions so far can be seen here - https://www.benchmarksixsigma.com/forum/lean-six-sigma-business-excellence-questions/ Please visit the forum home page at https://www.benchmarksixsigma.com/forum/ to respond to the latest question open till the next Tuesday/ Friday evening as per Indian Standard Time. The best answer is always shown at the top
  7. Q. 89 If we want to ensure that a statistical test picks up a significant effect, what will we want to increase - confidence or power of test? Note for website visitors - Two questions are asked every week on this platform. One on Tuesday and the other on Friday. All questions so far can be seen here - https://www.benchmarksixsigma.com/forum/lean-six-sigma-business-excellence-questions/ Please visit the forum home page at https://www.benchmarksixsigma.com/forum/ to respond to the latest question open till the next Tuesday/ Friday evening as per Indian Standard
  8. Hi, Please can you let me know few examples of what do we mean by “Are external conditions same†when we perform hypothesis testing. In this case the developers doing testing may be different, however they are using the same code and same machines. So should we say that external conditions are same or does it even depend on the skills of people and say that external conditions are different.’ Please suggest. Best Regards, Bharani Kumar 9849312304
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