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***Show Work (preferably in excel)*** Battery life between charges for a new cell phone is thought to follow exponential distribution with an expected life of

***Show Work (preferably in excel)***

Battery life between charges for a new cell phone is thought to follow exponential distribution with an expected life of 22.6 hours.

What is the probability that the battery will run out before 18 hours for a randomly selected cell phone? Answer .5491

What is the probability that the battery will last at least for 32 hours for a randomly selected cell phone? Answer .2427

What is the probability that the batterly will last between 9 hours and 32 hours for a ramdomly selected cell phone? Answer .4288

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