JJ just used an Independent groups t-test to analyze his data for his Master's degree and found that the t-value or his calculated t was equal to 3.05 based on his degrees of freedom of 60.The table t was 1.671 and he set his alpha level at .05 directional.Can he reject the null hypothesis and conclude the groups are significantly different.
A)No,he cannot reject the null
B)Yes,he can reject the null
C)He needs to run another test to determine if he has a type II error
D)Both a & c

Question

Quizplus · Accepted Answer

The calculated t-value of 3.05 is greater than the critical t-value of 1.671, and the alpha level is set at .05 directional, which means JJ is interested in a one-tailed test. Since the calculated t-value is significant and falls in the rejection region, JJ can reject the null hypothesis and conclude that the groups are significantly different. There is no need to run another test to determine if he has a type II error as his results are statistically significant.

JJ Just Used an Independent Groups T-Test to Analyze His