Question

Pick the best choice
A researcher compared a sample of BYC students (n = 10) and a sample of GYC students (n = 10) on the hours of sleep. After computing the difference between the two groups, he found t= 1.50.

Using α= .05 two tails, what is his conclusion?

*Failed to reject the null hypothesis, and there is no difference between two groups on the sleep hours.
*Reject the null hypothesis, and there is a difference between two groups on the sleep hours.
*Failed to reject the null hypothesis, and there is a difference between two groups on the sleep hours.
*Reject the null hypothesis, and there is no difference between two groups on the sleep hours.

What are the cut-off points for n = 10 when using a repeated design? (dependent t-tesst)?
*2.086
*2.093
*2.262
*2.228

A repeated-measures study comparing two treatments with n = 4 participants produces D = 2 and SS = 75 for the difference scores. What is the estimated standard error for the sample mean difference?
5
25
6.25
2.5

Answer 1