Multiple Choice
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,determine the sample size for this study.
A) 7
B) 43
C) 58
D) 122
Correct Answer:
Verified
Correct Answer:
Verified
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