Question: Wondrous Widgets is changing the sampling procedure for a particular process. Instead of taking a sample of 12 units each hour, the operator will now

Wondrous Widgets is changing the sampling procedure for a particular process. Instead of taking a sample of 12 units each hour, the operator will now take a sample of 18 units. The control limits are consequently adjusted so that they remain in accordance with industry standards. Which of the following two statements are true: (a) The control limits are tighter than they were previously (i.e., UCL -LCL is smaller than it was with a sample of 12). (b) The sigma capability has increased. a) Both are true. b) Only (a) is true. c) Only (b) is true. d) Neither statement is true.

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