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Use the following information to answer questions 13-14: Superior nut bar is produced at a highly automated facility. One of the quality control factors is the weight of each bar. Samples of 10 bars are taken regularly and adjustments are made based on the outcome of quality control process. Average weights and ranges of the latest samples are reported as following: Average Sample |Average weight (gram) Range 1 51 5 53 A 3 48 1 4 49 3 5 52 13) What is the upper control limit of X chart? A. 49 to under 50 B. 50 to under 51 C. 51 to under 52 D. 52 to under 53 14) What is the lower control limit of R chart? A. Less than 0.74 B. 0.74 to under 0.78 C. 0.78 to under 0.81 D. 0.81 to under 0.88 15) What is the status of production process based on this report? A. Both R and X charts indicate that the process is in statistical control B. Both R and X charts indicate that the process is out of statistical control C. R chart indicates that process is out of statistical control but not X chart D. X chart indicates that process is out of statistical control but not R chart