The mean of 15 observations was 25. It was found later that an observation 40 was wrongly taken as 25. The corrected new mean is Pick one.
A) 20
B) 30
C) 15
D) 18
E) 26
26xplanation:   Correct Sum = (25* 15 + 40 - 25)= 
<gadget id="calculator">(25* 15 + 40 - 25)</gadget>
<output>390</output>
390   Correct mean= = 390/15= 
<gadget id="calculator">390/15</gadget>
<output>26</output>
26   Answer: 26
<result>E</result>
The mean of 15 observations was 25. It was found later that an observation 40 was wrongly taken as 25. The corrected new mean is