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n experiment consists of flipping a coin 4 times and observing the sequence of heads and tails. The random variable X is the number of

n experiment consists of flipping a coin 4 times and observing the sequence of heads and tails. The random variable X is the number of heads in the observed sequence. Without doing any calculations, what would you guess the expected num- ber of tails for a trial of this experiment would be? Justify your reasoning

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