2. A quality manager believes that experienced product inspectors are more consistent than novice inspectors when determining whether products are defective. The same 200 items were inspected by 11 experienced and 11 inexperienced inspectors. Below are the results for each group.
A. State the null and alternative hypotheses to determine whether the variance for novice inspectors is greater than the variance for experienced inspectors.
B. State the decision rule for the above hypothesis.
C. What can the manager conclude from the above data, why?
- 阿泰Lv 61 decade agoFavorite Answer
H0: The variance for novice inspectors is not greater than the variance for experienced inspectors. (sigman2<=sigmae2)
H1: The variance for novice inspectors is greater than the variance for experienced inspectors. (sigman2>sigmae2)