Hi, been looking over my Hypothesis Testing notes, and can't seen to find anything about testing the Binomial. For example a recent question read something like this.

A coin was tossed 20 times, with 16 tails and 4 heads. Let $\displaystyle Y$ be the number of heads thrown. How would I test this?

Guessing you'd start off with something like:

$\displaystyle Y - Bi(20,p)$

$\displaystyle H_0: p=0.5$

$\displaystyle H_A: p \neq0.5$

Not sure how to procede from here, if I was testing a Normal Distribution I'd calculate a p-vaule, just not sure how to do it for the Binomial.

Thanks in advance