A Manufacturing Company Produces Part A732 for the Aerospace Industry

Multiple Choice

A manufacturing company produces part A732 for the aerospace industry.This particular part can be manufactured using 3 different production processes.The management wants to know if the quality of the units of part A732 is the same for all three processes.The production supervisor obtained the following data: Process 1 had 29 defective units in 240 items,Process 2 produced 12 defective units in 180 items,and Process 3 manufactured 9 defective units in 150 items.At a significance level of .05,the management wants to perform a hypothesis test to determine whether the quality of items produced appears to be independent of the production process used.What is the rejection point condition?

A) Reject H₀ if χ² > .10257
B) Reject H₀ if χ² > 9.3484
C) Reject H₀ if χ² > 5.99147
D) Reject H₀ if χ² > 7.37776
E) Reject H₀ if χ² > 7.81473