[SOLVED] Sample St. Dev & Mean

Okay, so I took Data Analysis I over half a year ago and now I'm in II and the Prof isn't really reviewing things in a way that is helping me. He's using software to teach so I don't really get what is going on (yeah, it's easy but come on...not good for learning) and I don't have my old book to review with since I left it at home over the summer. I feel so nervous, I can't recall this stuff and I don't have the software to breeze through it anyways. Here is what I'm stuck on:

*A random sample is to be selected from a population that has a proportion of successes π = 0.61. Determine the mean and standard deviation of the sampling distribution of **p for each of the following sample sizes. (Round the answers for μp to two decimal places, the answers for σp to four decimal places.) *

*1. n = 30*

μp =

σp =

If someone can help me figure out that one there, hopefully it'll come back to me and I can do the rest. I just can't remember this for the life of me. :(