16) UNCCOPER manufacturing has collected data to develop X-bar and R charts. . The average of the sample averages X-double bar is 6.96 and the average range R-bar is 12 based on several samples of size 7. Answer Qs 16-18 based on this data.

A) 0.96

B)0

C) None of these

D)1.68

17) Which of the following is the resulting UCL for the X-bar chart?

A)12

B) None of these

C)12.92

D) 0

18) Which of the following is the resulting LCL for the X-bar chart? A. 1.92 B. 1.2 C. 0.0 D. None of these

A) 1.2

B)1.92

C) 0

D)None of these

19) The UTL and LTL specification limits for a 6 inch diameter round metal ducting are 6.05 and 5.95 (i.e. 6 +- 0.05 ). According to data collected, the actual average diameter for the process is 5.98 with a standard deviation of 0.02.

The Cpk for the process is:

A)None of these

B)1.167

C) 0.5

D) 1.67