Here is another related question from my previous. I want to understand how to use the standard normal distribution table. Therefore, how do you find the critical value z for a 90% confidence level, using the table only. Show a snapshot of the table, and point to me how to obtain the critical value. I will give a thumbs up (helpful) for the correct answer. Thanks!

Finding Critical Values. Find the critical value za/2 that corresponds to the given confidence level. 90%

1. A sample size of n=15 is a simple random sample selected from a normally distributed population. Using Table C, find the critical value t* corresponding to a 95% confidence level in the following scenarios:

a.............to construct a confidence interval 

b..............one-sided hypothesis test 

c..............two-sided hypothesis test