Question: With reference to Example 3.3, find the probability distribution of Y, the difference between the number of heads and the number of tails obtained in

With reference to Example 3.3, find the probability of Y, the difference between the number of heads and the number of tails obtained in four tosses of a balanced coin.
Example 3.3
Find a formula for the probability of the total number of heads obtained in four tosses of a balanced coin.

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