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Suppose that the batting averages in a specific baseball league are normally distributed with mean 250...

Suppose that the batting averages in a specific baseball league are normally distributed with mean 250 and standard deviation 25. If the league has 600 players, how many players would you expect to have a batting average above 310?

Answer: 4.92 or 5. I just need to know how to get to this answer, preferably by a calculator method! I have a TI-84 plus. Thanks in advance.

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