Related t-test

Question 1

When would psychologists use a related t-test?

Answer 1

If the research comes from repeated measures or matched pairs design
The data is normally distributed and is interval data

Question 2

How do you calculate the degrees of freedom in related t-test?

Answer 2

N(number in sample) - 1

Question 3

What do you do once you have the T value in related t-test?

Answer 3

Look for the critical value in the table at p=0.05 depending on whether your hypothesis is one tailed or two tailed and then look at the value for the degree of freedom you calculated

Question 4

What conclusions can be drawn if the T value is equal to or greater than the calculated critical value in related t-test?

Answer 4

The results are significant
Reject the null hypothesis
Accept the alternative hypothesis

Question 5

What conclusions can be drawn if the T value is smaller than the calculated critical value in related t-test?

Answer 5

The results are not significant
Accept the null hypothesis
Reject the alternative hypothesis