The following list contains a number of situations where a researcher

may consider using a variation of the t-test:

(a)       To compare two group means

(b)      

To determine whether a relationship exists between two categorical

(nominal scale) variables

(c)       To compare a group mean with a constant value

(d)      

To determine whether a relationship exists between two continuous

quantitative variables

Two of the statements above are true. Choose the correct set of true

statements from the list below: