Each day at a large hospital, several hundred laboratory tests are performed. The rate at which these

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Each day at a large hospital, several hundred laboratory tests are performed. The rate at which these tests are done improperly (and therefore need to be redone) seems steady, at about 4%. In an effort to get to the root cause of these nonconformances, tests that need to be redone, the director of the lab decided to keep records over a period of one week. The laboratory tests were subdivided by the shift of workers who performed the lab tests. The results are as follows:
Each day at a large hospital, several hundred laboratory tests

a. Construct a side-by-side bar chart of nonconformances and shift.
b. What conclusions concerning the pattern of nonconforming laboratory tests can the laboratory director reach?

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Basic Business Statistics Concepts And Applications

ISBN: 9780132168380

12th Edition

Authors: Mark L. Berenson, David M. Levine, Timothy C. Krehbiel

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