# SOLUTION: Brand A car batteries have a warranty of 60 months. The warranty given by the company depends upon the average life of batteries. The life of the batteries is normally distribute

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 Algebra: Sequences of numbers, series and how to sum them Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Sequences-and-series Question 611317: Brand A car batteries have a warranty of 60 months. The warranty given by the company depends upon the average life of batteries. The life of the batteries is normally distributed with a mean of 62 months and a standard deviation of 2 months. What percent of the batteries will be working after 64 months. I got 25% is that correct.Answer by scott8148(6628)   (Show Source): You can put this solution on YOUR website!the question is asking what portion of the population is more than 1 standard deviation above the mean ___ z > 1 check the z-score table again