Is there a significant difference between the mean attendance for the classes given $$a = 0.05$$ ?
A) Yes, there is a significant difference between the means.
B) No, there is no significant difference between the means.
C) The F-test cannot be used to answer whether or not there is a significant difference between the means.
D)The Scheffé test needs to be performed in order to find whether or not there is a significant difference between the means.

Question

Quizplus · Accepted Answer

We can use the F-test to compare the means of two independent samples. If the calculated F-value exceeds the critical value at the desired level of significance (here $a=0.05$), we reject the null hypothesis of equal means and conclude that there is a significant difference between the means. If the calculated F-value does not exceed the critical value, we fail to reject the null hypothesis and conclude that there is no significant difference between the means. Without further information, we cannot conclude that the Scheffé test needs to be performed.

Is There a Significant Difference Between the Mean Attendance for the Classes