Use critical values to test the null hypothesis H0 1 2 20 versus the alternative hypothesis Ha 1 2 20 by setting a equal to 101 051 011 and 001 How much evidence is there that the difference between 1 and 2 is not equal to 20 ...

Use critical values to test the null hypothesis H0: 1 - 2 = 20 versus the alternative

Question:

Use critical values to test the null hypothesis H0: µ1 - µ2 = 20 versus the alternative hypothesis Ha: µ1 - µ2 ≠ 20 by setting a equal to .101 .051 .011 and .001. How much evidence is there that the difference between µ1 and µ2 is not equal to 20?