Find the mean and standard deviation of the sums you should get when you roll two standard number cubes.

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Please find attached solution, Hope my solution is helpful for you.

Thank You

The way you solved it is much more complicated than what I have learned so far. Is there a simpler way to solve this?

Ok, but according to me is more simple and give accurate answer to your solution.

I understood what you were doing in the first and second charts, and in understood what you were doing in the first column of the third charts, but the next two columns did not make sense to me

Dear, If you see formula you can understand easily......Thank You

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