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Question 3 of 24 A factory supervisor is concerned that the time it takes workers to Hour IX complete an important production task (measured in seconds) is 18.4 too erratic and adversely affects expected profits. The supervisor 16.9 proceeds by randomly sampling 5 individuals per hour for a period of 10 hours. The sample mean and range for each hour 23.0 are shown to the right. She also decides that lower and upper 21.2 specification limit for the critical-to-quality variable should be 10 o. and 30 seconds, respectively. Suppose the supervisor constructs 24.0 an R chart to see if the variability in collection times is in-control. 9.3 This R chart is characterized by which of the following? 15.8 20.0 23.0 O A. Increasing trend O B. In-control O C. Decreasing trend O D. Individual outliers