The mean of a set of scores is 8 and the standard deviation is 4. What will the new mean, standard deviation, and variance be if you:
a. Add 6.8 to every number?
b. Subtract 4 from every number?
c. Multiply every number by 3.2?
d. Divide every number by 4?
e. Add 6 to every number, and then divide each new number by 2?