There are 2 cardboard boxes. Each of them has 6 tiles numbered as 1,1,2,3,3,4. Find the variance of the distribution of the expected values of getting a total of 2,3,4,5,6,7 and 8 when one picks two tiles at a single event and this event repeats for 36 times assuming the picked tiles are replaced on every repitition.
I really do not know but this is my best guess.
the variance is down the bottom of the 2nd diagram.
Yes its absolutely right, apart from the fact that I got the mean as 4.8 and when I solved it with this value I got the variance as 2.46. But I guess that minute difference can be ignored right?