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 be the number of heads thrown. How would I test this?

Guessing you'd start off with something like:

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