Question: I need help with question a. what is the value of x? I've attached the chart as well. Auto pistons at Wemming Chung's plant in

I need help with question a. what is the value of x? I've attached the chart as well.

I need help with question a. what is the value of

Auto pistons at Wemming Chung's plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be controlled. From sample sizes of 10 pistons produced each day, the mean and the range of this diameter have been as follows: Day 1 2 3 Mean x (mm) 158.9 151.2 151.6 153.5 154.6 Range R (mm) 4.0 4.6 3.9 5.0 4.7 4 5 a) What is the value of ? Upper Range, Sample Size, n DA Lower Range, D3 2 0 0 3 OUT AN Mean Factor, A2 1.880 1.023 0.729 0.577 0.483 0.419 4 0 3.268 2.574 2.282 2.115 2.004 1.924 5 0 6 0 7 0.076 8 9 10 12 0.373 0.337 0.308 0.266 1.864 1.816 1.777 1.716 0.136 0.184 0.223 0.284

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\begin{tabular}{cccc} \hline Sample Size, n & Mean Factor, A2 & Upper Range, D4 & Lower Range, D3 \\ \hline 2 & 1.880 & 3.268 & 0 \\ 3 & 1.023 & 2.574 & 0 \\ 4 & 0.729 & 2.282 & 0 \\ 5 & 0.577 &...

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