Answer :

Given, Uncorrected mean is 40 and corrected SD is 5.1 and N = 100

To Find: Find the correct mean and SD


Explanation: Here,


Then,


The corrected sum of observation



So,




Now, Given Incorrect SD = 5.1





Corrected



Correct SD is 5


Hence, Correct mean is 39.90 and correct SD is 5


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