Guarantees that mean life of a certain kind of light bulb, Basic Statistics

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Guarantees that mean life of a certain kind of light bulb

A light bulb manufacturer guarantees that mean life of a certain kind of light bulb is at least 800 hours. A random sample of 39 light bulbs has mean life of 786 hours with standard deviation of 55 hours. Do you've enough evidence to reject the manufacturer's claim? use a=0.03

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Basic Statistics: Guarantees that mean life of a certain kind of light bulb

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Basic Statistics: Guarantees that mean life of a certain kind of light bulb

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Recent Questions Asked Basic Statistics

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Basic Statistics: Guarantees that mean life of a certain kind of light bulb

Reference No:- TGS0872864

Recent Questions Asked Basic Statistics

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