Dissertation question assistance

I am working on my dissertation, and have the following answers. However, I do not know how to fully explain it if asked. Would you please explain these results in layman terms:

1) pa-pb=0.055, z=2.531, p=.006

2)n(p) and n(1-p)> or = to 5
n=number in sample, and p=proportion

3) x2(1)=66.640, p<.001

Your help, time and consideration shall be greatly appreciated.