The mean of 50 observations was 40. It was found later that an observation 45 was wrongly taken as15 The corrected new mean is Choose the correct choice from the following
A) 40 B) 36.5 C) 46.5 D) 20.5 E) 40.6
40.6xplanation:   Correct Sum = (40 * 50 + 45 - 15)= 
<gadget id="calculator">(40 * 50 + 45 - 15)</gadget>
<output>2_030</output>
2030   Correct mean= = 2030/50= 
<gadget id="calculator">2030/50</gadget>
<output>203/5 = around 40.6</output>
40.6   Answer: 40.6
<result>E</result>
The mean of 50 observations was 40. It was found later that an observation 45 was wrongly taken as15 The corrected new mean is