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A testing engineer in a light bulb factory is planning a study to estimate the average life of a large shipment of light bulbs. The
A testing engineer in a light bulb factory is planning a study to estimate the average life of a large shipment of light bulbs. The engineer wants to estimate the average life within plus or minus 16 hours with 95 percent confidence. Assuming a process standard deviation of 90 hours, what is the sample size for this study
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Managing: A Competency-based Approach
Authors: Don Hellriegel
Eleventh Edition
0324421400, 978-0324421408
