Mathematics, 05.02.2021 22:30, ant5784tgi

6.1) A manufacturer of components for automobile transmissions wants to use control charts to monitor a process producing a shaft. The resulting data from 20 samples of 4 shaft diameters that have been measured are: a) Find the control limits that should be used on the x and R control charts. b) Assume that the 20 preliminary sample plot in control on both charts. Estimate the process mean and standard deviation

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6.1) A manufacturer of components for automobile transmissions wants to use control charts to monito...