An experiment has a single factor with five groups and seven values in each group. a. How many degrees of freedom are there in determining the among-group variation? b. How many degrees of freedom are there in determining the within-group variation? c. How many degrees of freedom are there in determining the total variation? a. There is/are degree(s) of freedom in determining the among-group variation. (Simplify your answer.) b. There is/are degree(s) of freedom in determining the within-group variation. (Simplify your answer.) c. There is/are degree(s) of freedom in determining the total variation. (Simplify your answer.)