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In: Statistics and Probability

2. The lifetime of a SuperTough AAA battery is normally distributed with mean = 28.5 hours...

2. The lifetime of a SuperTough AAA battery is normally distributed with mean = 28.5 hours and standard deviation = 5.3 hours. For a battery selected at random, what is the probability that the lifetime will be

  1. 25 hours or less

  2. 34 hours or more

  3. Between 25 and 34 hours

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