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Depths of pits on a corroded steel surface are normally distributed with mean 822 μm and...

Depths of pits on a corroded steel surface are normally distributed with mean 822 μm and standard deviation 29 μm.

A) Find the 10th percentile of pit depths

B) A certain pit is 780 μm deep. What percentile is it on?

Math   Statistics-And-Probability   
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TOPIC:Normal distribution and percentiles.

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