Given there are five (05) sample taken. The sample mean (X-bar) are; 8.51, 8.18, 11.07, 10.03, and 10.23 respectively. Also, Range values for
these 5 samples are; 3.33, 2.61, 3.39, 4.39, and 6.49. If the lower control limit for X-bar chart is 7.664, what should be the most appropriate
the sample size?
Select one:
O a. 3
O b.5
O c. None is correct
O d. 4
O e. 6