1 the blah blah is VERY important

I need to know the null and alternative hypotheses

2 your babbling in the later parts is blah

THIS is NOT a t test

you are tesing a proportion

the underlying distribution is binomial, not normal

hence you don't have normality to do a t test

3 you will most likely use the central limit theorem to approximate the binomial

and that p0 is P under the null, see 1.

the .005 is alpha