A manufacturing company produces part 2205 for aerospace industry. This specific part can be manufactured using three different production processes. The management desires to know if the quality of the units of part 2205 is same for all three processes. The production supervisor obtained following data: The Process 1 had 29 defective units in 240 items; Process 2 produced 12 defective units in 180 items as well as Process 3 manufactured 9 defective units in 150 items.
At a significance level of .05, the management wants to carry out a hypothesis test to determine if the quality of the items produced appears to be independent of production process employed. Based upon Chi-square test, we:
A. Reject H0 and conclude that the quality of the product is not the same for all processes
B. Reject H0 and conclude that the quality of the product is dependent on the manufacturing process
C. Failed to reject H0 and conclude that the quality of the product does not significantly differ among the three processes