the mean of 50 observations was 40. it was found later that an observation 48 was wrongly taken as 23. the corrected new mean is Choose the correct choice from the following answers.
A) 40.46  B) 36.1  C) 36.5  D) 39.1  E) none
<gadget id="calculator">40 * 50</gadget>
<output>2_000</output>

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

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

<gadget id="calculator">2_000 + 25</gadget>
<output>2_025</output>

<gadget id="calculator">2_025 / 50</gadget>
<output>81/2 = around 40.5</output>

<result>A</result>
the mean of 50 observations was 40. it was found later that an observation 48 was wrongly taken as 23. the corrected new mean is
divide(add(multiply(40, 50), subtract(subtract(50, const_2), 23)), 50)
"sol . therefore correct sum = ( 40 × 50 + 48 – 23 ) = 2023 . therefore correct mean = 2023 / 50 = 40.46 . answer a"