The mean of 20 observations is 17. On checking, it was found that the two observations were wrongly copied as 3 and 6. If the wrong observations are replaced with correct values 8 and 9, then what is the correct mean?

The mean of 20 observations is 17. On checking, it was found that the

1.	The mean of 20 observations is 17. On checking, it was found that the two observations were wrongly copied as 3 and 6. If the wrong observations are replaced with correct values 8 and 9, then what is the correct mean?
A.	17.4
B.	16.6
C.	15.8
D.	14.2
Answer» B. 16.6