A small company has 10 employees that receive a monthly paycheck and you calculate the mean and standard deviation for the paychecks in December. For the holiday, the president decides to give everyone a $500 raise. How would the mean and standard deviation be affected?
a. both the mean and standard deviation would increase by $500
b.The mean would increase by $500, but the standard deviation would stay the same.
c.The mean would stay the same, but the standard deviation would increase by $500.
d. Neither the mean nor the standard deviation would change.