from what i'm reading, parameters and statistics are synonymous to a measurement of a proportion? what i'm confused about is why they'd talk about p hat and then suddenly use p for finding mean and standard deviation for p hat
Here's an example that might help clear things up in binomial (i'm still confused about cdf!)
A manager notes that there is a .125 probability that any employee will arrive late for work. What is the probability that exactly one person is in a six person department will arrive late?
Note the key word: "exactly" one person
So...binompdf(n,p,x) -> binompdf(6,.125,1)= .385