Q8 of 77 Page 32

For the following probability distribution:

















X:



1



2



3



4



P(X):



1/10



1/5



3/10



2/5



The value of E(X2) is


The probability distribution of X is:


















X:



1



2



3



4



P(X):



1/10



1/5



3/10



2/5










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For the following probability distribution:

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Let X be a discrete random variable. Then the variance of X is