Suppose the counselor tested the null hypothesis that fourth graders in this class were less depressed than those at the school generally. She figures her t score to be -.20. What decision should she make regarding the null hypothesis?
A)Reject it
B)Fail to reject it
C)Postpone any decisions until a more conclusive study could be conducted
D)There is not enough information given to make a decision

Question

Quizplus · Accepted Answer

Without knowing the critical value or significance level, it is impossible to determine whether the t score is significant or not. However, if the counselor had a significance level of 0.05, the critical t score would be +/- 1.96 for a two-tailed test, and if her calculated t score was less extreme than that, she would fail to reject the null hypothesis. Therefore, option B is the best choice based on the information provided.

Suppose the Counselor Tested the Null Hypothesis That Fourth Graders