State the degrees of freedom and the type of test ( repeated measures or matched pairs ) for the following examples of measures for a related samples...

State the degrees of freedom and the type of test (repeated measures or matched pairs) for the following examples of measures for a related samples t test: Explain

(a)  The difference in coping ability in a sample of 20 brothers and sisters paired based on their relatedness

(b) The difference in relationship satisfaction in a sample of 25 pairs of married couples