You have join a materials company in a quality function. The company is dredgeing 100 acres for rock. The rock is then graded and sold. The C-stone is to weigh between 60 and 140 pounds per square...

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Extracted text: You have join a materials company in a quality function. The company is dredgeing 100 acres for rock. The rock is then graded and sold. The C-stone is to weigh between 60 and 140 pounds per square foot. You are planing to start and x-bar and r chart to check the quality control of these stones. Below are your first 7 days of readings. (You know you need at least 25 samples but you are eager to start.) 1 2 3 4. 5 6 7 96.9 89.3 81.9 94.3 112.7 106.5 84.4 114.4 82.8 114.8 90.9 111.3 107.4 90.8 92.7 85.4 86.7 121.6 114.8 86.5 104.5 For these 7 days, how many samples did you take? (whole numbers) What was your sub-sample size? (whole numbers) What are the total number of square foot buckets weighted in these 7 days? (whole numbers) What is the grand average? (one decimal) What is the center for the range? (one decimal) What is the upper limit for the x-bar? Using lower specification of 60 pounds and an upper limit of 140 pounds, what is the Cpk using the short-term method? (two decimals) Can this operation operate successfully? (yes or no)