Here's a few things to remember
Z scores for proportion
(p^ - p)/square root(p*(1-p)/n)
Z for difference of two proportion
(p1^ - p2^)/square root(p-bar(1-p-bar)/n1 + (p-bar(1-p-bar)/n2))
p-bar = (x1 +x2)/(n1 + n2)
Note that p-bar might also be noted at p-pooled
For hypotheses, remember that Ho always contains = and Ha contains <, > or "does not equal"
Confidence intervals for single proportion
p^ +/- Z*square root(p^(1-p^)/n)
For difference of two propotions
p1^ - p2^ +/- Z*square root(p1^(1-p1^)/n1 + p2^(1-p2^)/n2)
Z values for confidence intervals
90% = 1.645
95% = 1.96
98% = 2.33
99% = 2.575
You can also get these from Z chart
P-values are the value from
the Z chart for corresponding Z score if Ha contains < and 1- value
from the Z chart for corresponding Z score if Ha contains >. If Ha is
"does not equal" you take 1 - value from the Z chart for corresponding Z
score then multiply the result by 2.
You can also get p-values from Z scores using the link below.