The mean of 50 observations was 36. It was found later that an observation 43 was wrongly taken as 23. The corrected new mean is
Choose the correct choice from the following options:  A) 35.2  B) 36.1  C) 36.2  D) 36.4  E) none

Rationale: "solution correct sum = ( 36 x 50 + 43 - 23 ) = 1820 . â ˆ ´ correct mean = 1820 / 50 = 36.4 . answer d"
Answer: D