A manager wishes to build a control chart for a process. A total of five (05) samples are collected with four (04) observations within each sample. The sample means (X-bar) are; 14.09, 13.94, 16.86, 18.77, and 16.64 respectively. Also, the corresponding ranges are; 9.90, 7.73, 9.1, 7.56, and 3.49 respectively. The lower and upper control limits of the R- chart are respectively Select one: O a. 0,13.32 O b.0.16.22 O c. 1, 10.5 d. None is correct e. O, 17.23 Demand for a product is forecasted for the six periods is 263, 256, 301, 312, 304, and 294 respectively. If a CHASE DEMAND strategy is adopted, and the regular production cost is RO 12 per unit with a maximum regular production of 280 units per period. While, the overtime and subcontract costs are RO 20 and RO 25 per unit respectively. There is no limit on subcontracting; however, maximum overtime production capacity is 10. Average inventory holding cost is RO 5 per unit per period. What will be the total cost of regular production? Select one: a. O b. None is correct c. 1275 d. 800 e. 19668