The average (mean) of a list of n numbers is 7. When the number -11 is added to the list, the new average is 6. What is the value of n?
Answer Choices
A. 13
B. 14
C. 15
D. 16
E. 17
The average (mean) of a list of n numbers is 7. When the number -11 is added to the list, the new average is 6. What is the value of n?
Answer Choices
A. 13
B. 14
C. 15
D. 16
E. 17