Question 4:

If anyone could give me a link showing how to use the MATH coding I could explain this better, but I don't have the time to look for it now. =)

(((xbar)-4.5)/((((2.7)^2)/50))^0.5)=>1.645

therefore(xbar)=6.53(2dp) and so the pages do take too long to load.

Aside from the aesthetical blasphemy, I may also be wrong, and so take no personal blame for anything you falsely accredit to yourself. =P