in order to increase the mean of 6 numbers by 3, what would the total sum of the increase be?
A. 3
B.9
C.12
D.16
E.18
E
To increase the mean of 6 numbers by 3, you need to add 3 to each of the 6 numbers. Therefore, the total sum of the increase would be 3 * 6 = 18.
So, the correct answer is E. 18.
To find the total sum of the increase required to increase the mean of 6 numbers by 3, you can use the formula:
Total sum of increase = Increase per number × Total number of numbers
In this case, the increase per number is 3 and the total number of numbers is 6.
So, using the formula:
Total sum of increase = 3 × 6 = 18
Therefore, the correct answer is E. 18.