Stats- Critical Value Question

Question

For a confidence level of 80% with a sample size of 10, find the critical t value.

Critical Value = 

(round answer to 3 decimal places)

Answer 1

For confidence level of 80% and sample size = 10, you need to look in t-table for t-value corresponding to 10% upper tail probability and 9 degrees of freedom, which is 1.383.