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There are big changes in the manufacturing of halogen and LED light fixtures but a persistent...

There are big changes in the manufacturing of halogen and LED light fixtures but a persistent problem remains with product quality at these new manufacturers. The director of purchasing asked for samples of 100 from each of three producers and measured their quality in order to see if there were significant differences in the proportion that is acceptable across the 4. Use these data to run the test in Minitab to answer these questions. Firm 1 Firm 2 Firm 3 Firm 4 Acceptable 97 98 89 96 Not Acceptable 3 2 11 4

What is the hypothesis for this test? Ha; At least one differs; The distribution of acceptability does differ from previous distribution. Ha: There is no association between acceptability and firm number Ha; There is no difference in proportion of defects across firms Ha: There is an association between acceptability and firm number or Ha: The proportion of acceptable does differ across firms

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Ha: The proportion of of acceptale does differ across firms.

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