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: 20 20 ΣΣ-10.275, ΣR-1.012 i=1 i=l (a) Find the control limits that should be used on the x and R control charts. (b) Assume that the 20 preliminary samples plot in control on both charts. Estimate the process mean and standard deviation.

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: 20 20 ΣΣ-10.275, ΣR-1.012 i=1 i=l (a) Find the control limits that should be used on the x and R control charts. (b) Assume that the 20 preliminary samples plot in control on both charts. Estimate the process mean and standard deviation.

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter7: Analytic Trigonometry

Section7.6: The Inverse Trigonometric Functions

Problem 94E

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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:
20
20
Σ-10.275, ΣR - 1.012
%3D
i=1
i=1
(a) Find the control limits that
should be used on the x and R
control charts.
(b) Assume that the 20 preliminary samples plot in
control on both charts. Estimate the process
mean and standard deviation.

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