Question
I'm confused by this and not sure how to do the problem. I have attached data from previous problems, but I'm not sure if they
I'm confused by this and not sure how to do the problem. I have attached data from previous problems, but I'm not sure if they even apply to this problem.
Compute limits for the sample mean x around =12 such that, as long as a new sample mean is within those limits, the process will be considered to be operating satisfactorily. If x exceeds the upper limit or if x is below the lower limit, corrective action will be taken. For quality control purposes, these limits are referred to as lower and upper control limits, respectively: Lower Control Limit = (Round answers to 4 decimal places) Upper Control Limit = (Round answers to 4 decimal places)
Sample 1 | Sample 2 | Sample 3 | Sample 4 |
11.55 | 11.62 | 11.91 | 12.02 |
11.62 | 11.69 | 11.36 | 12.02 |
11.52 | 11.59 | 11.75 | 12.05 |
11.75 | 11.82 | 11.95 | 12.18 |
11.9 | 11.97 | 12.14 | 12.11 |
11.64 | 11.71 | 11.72 | 12.07 |
11.8 | 11.87 | 11.61 | 12.05 |
12.03 | 12.1 | 11.85 | 11.64 |
11.94 | 12.01 | 12.16 | 12.39 |
11.92 | 11.99 | 11.91 | 11.65 |
12.13 | 12.2 | 12.12 | 12.11 |
12.09 | 12.16 | 11.61 | 11.9 |
11.93 | 12 | 12.21 | 12.22 |
12.21 | 12.28 | 11.56 | 11.88 |
12.32 | 12.39 | 11.95 | 12.03 |
11.93 | 12 | 12.01 | 12.35 |
11.85 | 11.92 | 12.06 | 12.09 |
11.76 | 11.83 | 11.76 | 11.77 |
12.16 | 12.23 | 11.82 | 12.2 |
11.77 | 11.84 | 12.12 | 11.79 |
12 | 12.07 | 11.6 | 12.3 |
12.04 | 12.11 | 11.95 | 12.27 |
11.98 | 12.05 | 11.96 | 12.29 |
12.3 | 12.37 | 12.22 | 12.47 |
12.18 | 12.25 | 11.75 | 12.03 |
11.97 | 12.04 | 11.96 | 12.17 |
12.17 | 12.24 | 11.95 | 11.94 |
11.85 | 11.92 | 11.89 | 11.97 |
12.3 | 12.37 | 11.88 | 12.23 |
12.15 | 12.22 | 11.93 | 12.25 |
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