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Describe percentile of the Normal distribution.

The distribution of lifetimes for a definite type of light bulb is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. What is the 33rd percentile of the distribution of lifetimes?

1) 560

2) 330

3) 1044

4) 1440

5) none of these

Statistics and Probability, Statistics

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