At an assembly plant for light trucks, routine monitoring of the quality of welds yields the following

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At an assembly plant for light trucks, routine monitoring of the quality of welds yields the following data: Number of Welds High Quality Quality Moderate Low Quality Day Shift Evening Shift Night Shift 467 191 42 445 171 34 254

Number of Welds High Quality Quality Moderate Low Quality Day Shift Evening Shift Night Shift 467 191 42 445 171 34 254

Can you conclude that the quality varies among shifts?

a. State the appropriate null hypothesis.

b. Compute the expected values under the null hypothesis.

c. Compute the value of the chi-square statistic.

d. Find the P-value. What do you conclude?

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Statistics For Engineers And Scientists

ISBN: 9780073401331

4th Edition

Authors: William Navidi

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Question Posted: Nov 09, 2018 09:43 AM

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At an assembly plant for light trucks, routine monitoring of the quality of welds yields the following

Question:

Number of Welds High Quality Quality Moderate Low Quality Day Shift Evening Shift Night Shift 467 191 42 445 171 34 254 129 17

Step by Step Answer:

a Ho Quality and shift are independent Ha Quality ...View the full answer

Statistics For Engineers And Scientists

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