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

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At an assembly plant for light trucks, routine monitoring of the quality of welds yields the following data: The results are presented in the folbwing table. Observed Values Number of Welds High Quality Moderate Low Quality Quality Day Shift Evening Shift Night Shift 467 191 42 445 171 34 254 129 17 a) State the appropriate null hypothesis? b) Compute the table of expected values under the null hypothesis. c) Compute the value of the Chi-square statistics. d) Find the P-value. What do you conclude? At an assembly plant for light trucks, routine monitoring of the quality of welds yields the following data: The results are presented in the folbwing table. Observed Values Number of Welds High Quality Moderate Low Quality Quality Day Shift Evening Shift Night Shift 467 191 42 445 171 34 254 129 17 a) State the appropriate null hypothesis? b) Compute the table of expected values under the null hypothesis. c) Compute the value of the Chi-square statistics. d) Find the P-value. What do you conclude?

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