Quality Control - 1 The next 4 questions refer to the following situation: In the provided blank, insert the letter that corresponds to the correct answer. For example, if the correct answer is "a) 1.990 ", insert only "a" as the correct answer. A chocolate company manufactures 4 ounces chocolate bars. Random samples of size four were taken and weighted. Eight hours of observation provided the following data: Use the above information to answer the following questions (always round to two decimal places): I. Determine the lower and upper control limits for the X-bar control chart. The letter associated with the correct answer is a) 3.89 and 4.15 respectively. b) 3.91 and 4.13 respectively. c) 3.93 and 4.11 respectively. d) 3.95 and 4.15 respectively. e) None of the above II. Is the central process in control or not, explain why? The letter associated with the correct answer is a) No, because exactly one x-bar values fall outside the control interval. b) No, because exactly two x-bar values fall outside the control interval. c) No, because exactly three x-bar values fall outside the control interval. d) Yes, because all x-bar values fall within the control interval. e) None of the above III. Determine the lower and upper control limits for the R-control chart. The letter associated with the correct answer is a) 0.00 and 0.32 respectively. b) 0.00 and 0.34 respectively. c) 0.02 and 0.28 respectively. d) 0.02 and 0.30 respectively. e) None of the above IV. Is the variability of the process in control, explain why? The letter associated with the correct answer is a) No, because exactly one R value fall outside the control interval. b) No, because exactly two R values fall outside the control interval. c) No, because exactly three R values fall outside the control interval. d) Yes, because all R values fall within the control interval. e) None of the above