The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The observation is 15th
A. 20
B. 24
C. 26
D. 28
Answer:C
The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The observation is 15th
A. 20 B. 24 C. 26 D. 28