SOLUTION: Suppose the life of a particular brand of calculator battery is normally distributed with a mean of 80 hours and a standard deviation of 11 hours. what is the probability that a si
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Question 874492: Suppose the life of a particular brand of calculator battery is normally distributed with a mean of 80 hours and a standard deviation of 11 hours. what is the probability that a single battery randomly selected from the population will have a life between 75 and 85
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Population: mean of 80 hours and a standard deviation of 11 hours
P(x<85), z = 5/11
P(x <75), z = -5/11
P( -5/11 < z < 5/11) = .6753 - .3247
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