Question 22 QU Six samples of five observations each have been taken for a process. The sample Not yet means and ranges computed (in minutes) are, (mean, range): (4.06, 0.5), (3.89, 0.4), answered (4.11, 0.69), (3.93, 0.64), (3.84, 0.42), and (3.91, 0.49). Compute the upper control limit 10 Marked out of O a. 2.818 1.50 19 O b. 2.423 Flag O c. 4.208 28 question O d. 4.26 Finish