Posted by Karina on .
What critical value for z would be used to test the hypotheses: H0:μ≤10 and Ha:μ>10, for α = 0.05 ?

Statistics 
MathGuru,
This is a onetailed test (Ha is showing one direction). Therefore, at 0.05 for a onetailed test using a ztable, the critical value would be 1.645.