Hey i have a quick question if anybody can help. In hypothesis testing i get a z value to be 3.6. And the example says that this is rejected at the 5% level because z is greater than 1.96. whats really annoying me is i have forgot how to get the 1.96 value for the 5% level. How do i work it out? similarly for 1% level. I think its worked out on one of the tables but i cant remember how to do it. Can anybody help me?