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QUESTION
Suppose the life of a particular brand of calculator battery is normal distributed with a mean of 75 hours and a standard deviation of 10 hours.
Suppose the life of a particular brand of calculator battery is normal distributed with a mean of 75 hours and a standard deviation of 10 hours.What is the probability that a single battery randomly selected from the population will have a life between 70 and 80 hours? What is the probability that 16 randomly selected batteries from the population will have a life between 70 and 80 hours?
