Need help in expectation problem

Правка en1, от Samsam, 2016-09-19 21:35:54

Hi,

Could someone please help me solving this mathematical expectation problem ?

and I would be thankful if there is a code too.

Теги expectation, math

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en1 Английский Samsam 2016-09-19 21:35:54 212 Initial revision (published)