# expected value

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1. How many bit strings of length ten contain either at least five consecutive 0's or at least five consecutive 1's? explain

2. Which is more likely: rolling a total of 8 when two dice are rolled, or rolling a total of 8 when three dice are rolled? explain

3. Three fair dice are rolled.Let X be the sum of the numbers that come up. Find the expected value EX and the variance VarX.

See attachment for problem 4.

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#### Solution Summary

The solution finds the expected value EX and the variance VarX.

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