20. The upper control limit oran A) 0.7 B) 3.0 C) 5.1 D) 12 21. Rational subgrou
ID: 3255479 • Letter: 2
Question
20. The upper control limit oran A) 0.7 B) 3.0 C) 5.1 D) 12 21. Rational subgroups are: A) those parts of a process that are identified as most likely to be special causes B) samples chosen to reflect only item-to-item variation in a process. C) those samples in an s chart that are in control. D) the specific groups of charts that we use to monitor a process. Use the following to answer questions 22-27: A restaurant owner wants to chart weekly sales for an eight-week period in the summer u individuals (D chart. The data in thousands of dollars can be seen below. 96 87 58 89 69 62 101 78 22. The center line for an I control chart would be: A) $79,000. B) $69,000. C) $80,000. D) $96,000. 23. An unbiased estimate for the process standard deviation would be: A) $20,010. B) $16,432. D) $15,302. Page 6 anExplanation / Answer
solution22:
middle line=mean
=sum/total
=96+87+58+89+69+62+101+78/8
=80*1000
=80000
ANSWERC:
Solution23:
stddev=15.8565
=15.8565*1000
=$15856.5
ANSWER C:
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