Task: Question Answering
Input (English): Problem: the mean of 50 observations was 36 . it was found later that an observation 30 was wrongly taken as 23 . the corrected new mean is : 
Options: a ) 36.02 , b ) 36.14 , c ) 36.12 , d ) 36.11 , e ) 36.8
Output (English): b