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nancy2457 nancy2457
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A major producer of incandescent light bulbs wishes to model the amount of time incandescent bulbs manufactured at a specific plant will last. The company uses an exponential random variable to model bulb life. If random variableX, which represents the lifetime of these incandescent bulbs, is exponentially distributed withλ = 0.0012 (corresponding to measurements in hours), what is the modeled mean lifetime of these bulbs?


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1200 hours



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833.3 hours



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694,444 hours



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921.2 hours

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
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