Determine the null hypothesis and critical value.
1. What is the null hypothesis? Utilize a = 0.05.
A) H0:μ1 ³ μ 2
B) H0:μ1 = μ 2
C) H0:μ1 £ μ 2
D) H0:μ1 ¹ μ 2
2. find out the critical value. Make use of a = 0.05.
A) -2.33
B) -2.58
C) -1.96
D) -1.645