Question: Role-playing games like Dungeons & Dragons use many different types of dice. Suppose that asix-sided die has faces marked 1, 2, 3, 4, 5, 6.

Role-playing games like Dungeons & Dragons use many different types of dice. Suppose that asix-sided die has faces marked

1, 2, 3, 4, 5, 6.

The intelligence of a character is determined by rolling this die twice and adding 1 to the sum of the spots. The faces are equally likely, and the two rolls are independent.

What is the average (mean) intelligence for such characters?

How spread out are their intelligences, as measured by the standard deviation of the distribution? (Round your answer to four decimal places.)

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