Probability question

[Alchemist]

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Right, exactly what do you want? (Not said in a snotty tone, just a matter of fact question.)

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In some sessions, it seems like half your starting hands contain a Nine (which suck in hi/lo). I wanted to figure out what the expected number of hands to get dealt a Nine were, then determine the standard deviation of having that happen in a given number of hands in a session.

It was mainly for my own curiosity, and to apply it to Omaha as well.