Construct average and range charts

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Question: A machining operation requires close tolerances on a certain part for automobile engines. The current specification for this measurement is 3.0 cm ± .001. The quality control procedure is to take a sample of 4 units and measure each of the parts. On the basis of past samples of size 4, x = 3.0 and R = .0020.

a. Construct average and range charts for this part.

b. On the basis of the following data, is the process in control?

161_Engines.png

c. Is the process creating output outside of its specifications?

Reference no: EM131909789

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