Basic Business Statistics, Student Value Edition (13th Edition)
Basic Business Statistics, Student Value Edition (13th Edition)
13th Edition
ISBN: 9780321946393
Author: Mark L. Berenson, David M. Levine, Kathryn A. Szabat
Publisher: PEARSON
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Chapter 19, Problem 25PS

The data in Tensile represent the tensile strengths of bolts

Chapter 19, Problem 25PS, The data in Tensile represent the tensile strengths of bolts of cloth. The data were collected in

of cloth. The data were collected in subgroups of three bolts of cloth over a 25-hour period.

a. Construct a control chart for the range.

b. Construct a control chart, for the mean.

c. Is the process in control?

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