21-25

a. 21. When a sample measurement falls inside the control limits, it means that each unit manufactured is good enough to sell b. the process limits cannot be determined statistically c. the process output exceeds the requirements d. if there is no other pattern in the samples, the process is in control no investigation is necessary until another sample value falls outside the control limits e. 22. The usual purpose of an R-chart is to signal whether there has been a a. gain or loss in dispersion b. change in the percent defective in a sample C. change in the central tendency of the process output d. change in the number of defects in a sample e. none of the above 23. If the Cpk index exceeds 1 a. the AQL must be smaller than the LTPD b. O must be less than one-third of the difference between the specification and the process mean the x-bar chart must indicate that the process is in control d. the process is capable of Six Sigma quality e. the process is characterized as "not capable" C. a. 24. Which one of the following is not a benefit of the implementation of JIT? cost reduction b. quality improvement c. rapid throughput d. variability increase e. rework reduction 25. Consider a firm with a net income of $20 million, revenue of $60 million and cost of goods sold of $40 million. If the balance sheet amounts show $2 million of inventory and $500,000 of property, plant & equipment, how many weeks of supply does the firm hold? (There are 52 weeks in a year) A) 12.50 B) 4.16 C) 2.60 D) 5.20 E) 3.47