Remembering values for Confidence levels completed, remember, everyone, problems, question

skycfa

Greetings,
Hope everyone is doing great. I just completed Vol 1 of Level 1 for Dec 08.
I had a question about values for the 95% Confidence level for a 1 tailed and 2 tailed test . are we supposed to remember those values ? Like for 90% , 95% and 99%. I keep getting mixed up with them esp when its for 1 tailed versus 2 tailed.
Is there a pattern to remember it or can we compute it instead from the Normal Dist tables ?
Finally, should one expect problems on the Spearman Rank coefficient (Reading in Hypothesis testing. )

skycfa

i stole glasses from his winery. it has a pretty cool museum if you ever have the chance to go