Which of the following statements about confounding is true?

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Which of the following statements about confounding is true?

  • Variables are confounded if they are difficult to study
  • Variables are confounded if they are exponentially related
  • Variables are confounded if the produce the same response
  • Variables are confounded if their effects cannot be separated in the study performed

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Six Sigma Advanced Analyze Phase Coursera Quiz Answers

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  1. While performing a hypothesis test, you calculate a p-value of 0.05. If the desired level of significance α = 0.01 then the conclusion is:
  2. Suppose we have the following hypothesis Z-test: A vendor claims their parts are shipped with a measurement of 1.86 cm. Assume σ = 0.03, n=64, critical values are ±1.96, and we calculate Z=3.6. What would we conclude?
  3. What is the term for when the effect of one input factor on the output depends on the level of another input factor?
  4. According to the chart above, what is the main effect of factor A?

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