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The quality control manager at a light bulb factory needs to determine whether the mean life of a large shipment of light bulbs is equal to 375 hours. The population standard deviation is 100 hours. A random sample of 64 light bulbs indicates a sample mean life of 350 hours. The level of significance is 0.05.

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Operation Management, Management Studies

Category:- Operation Management
Reference No.:- M991100

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