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A 10-yen coin is thrown $N$ times, where $N$ is the number of total heads of obtained by tossing three $100$-yen coins t...

A 10-yen coin is thrown $N$ times, where $N$ is the number of total heads of obtained by tossing three $100$-yen coins together. Calculate the expected value of the number of total heads obtained by tossing the $10$ yen coin.

explain pls
answer is 3/4

math   Statistics-And-Probability   
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Answer #1

N denotes .#heads obtained by, tossing 100 Yen cơn ns not, X denotes tt heads by-togsing loven enns Ntmes Expected # heads ob

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