Two-tailed Test: Rejecting the Null at 0.05 Level of Significance

  • Context:
  • Thread starter Thread starter elove
  • Start date Start date
  • Tags Tags
    Significance Test
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
2 replies · 3K views
elove
Messages
17
Reaction score
0
In a two-tailed test, the value of the test statistic is 2. If we know the test statistic follows a Student’s t- distribution with P
(T>2) = 0.03, then we have sufficient evidence to reject the null hypothesis at 0.05 level of significance.

I want to say True but I think I'm overthinking the problem. Can anyone help me out?
 
Physics news on Phys.org
The problem is, it's a two-tailed test. If you take $0.05$ as your significance level, then you'd need $0.025$ probability in each tail. But your $P$ value is $0.03>0.025$. Therefore, you do not have sufficient statistical evidence to reject the null hypothesis.
 
Yes! I get tripped up working backwards on problems. two-tailed - 0.05/2 = 0.025. I understand - thank you! I feel silly now on such a simple problem.