20What is the Upper Control Limit of the x-bar control chart? A. 12.030 B. 12.04

Question

20What is the Upper Control Limit of the x-bar control chart? A. 12.030 B. 12.048 C. 11.9867 D. 11.943 21. What is the Upper Control Limit of the R control chart? A. 0.137 B. 0.06 C. 0 D. 0.154 Use the following information to answer questions #22 and #23: Oklahoma's assembly unit has decided to use a p-Chart to monitor the proportion of defective steel handles produced by their production process. The control limits on these charts will be designed to include 95% of the sample proportions when the process is In Control. The quality control manager randomly samples 100 steel handles at 6 successive time periods and counts the number of defective handles in the sample Sample Defects 1 2 3 45 6 Average 13 13 12 10.167 22. What is the Center Line of the p control chart? C. 1.88 D. 100 A. 0.10167 B. 10.167

Explanation / Answer

for question 20 and 21 prior information is required

here total number of defects x =13+8+7+8+13+12=61

total samples checked n=6*100=600

hencecentre line for p chart =x/n=61/600=0.1067

option A is correct

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