Question: A manager wanted to determine whether or not the number of defective items produced at his factory was dependent on the day of the week.

  1. A manager wanted to determine whether or not the number of defective items produced at his factory was dependent on the day of the week. The following information was collected during 1 week. Use a critical value of 9.49.
M T W Th F
Non-defective 89 95 87 95 90
Defective 11 5 13 5 10

a. Formulate the null and alternate hypothesis for this test.

b. Compute the appropriate test statistic. Show all your work including the work for calculating one expected count and all parts of the statistic. (4 pts)

EXPECTED M T W Th F
Non-defective
Defective

X2value M T W Th F
Non-defective
Defective

Final X2 = _________________________

c. Formulate a conclusion for this test.

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