R help - Sep 2007 - How to find "p"(proportion) in binomial(n, p)?

Hi,

I got a problem. I am trying to find "p" in binomial.
X~bin(n, p)
I want to find value "p", so that Pr(X <= k) <= alpha.
Here, n, k are known.

Thank you for helping me with this!

Catherine

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