the mean of 50 observations was 36. it was found later that an observation 48 was wrongly taken as 23. the corrected new mean is:
Select the correct option:
A) 36.5
B) 35
C) 34
D) 33
E) 32.5
<gadget id="calculator">36 * 50</gadget>
<output>1_800</output>

<gadget id="calculator">50 - 2</gadget>
<output>48</output>

<gadget id="calculator">48 - 23</gadget>
<output>25</output>

<gadget id="calculator">1_800 + 25</gadget>
<output>1_825</output>

<gadget id="calculator">1_825 / 50</gadget>
<output>73/2 = around 36.5</output>

<result>A</result>
the mean of 50 observations was 36. it was found later that an observation 48 was wrongly taken as 23. the corrected new mean is:
divide(add(multiply(36, 50), subtract(subtract(50, const_2), 23)), 50)
"correct sum = ( 36 * 50 + 48 - 23 ) = 1825 . correct mean = 1825 / 50 = 36.5 answer a"