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Suppose a coin is tossed three times and let X be a random variable recording the...

Suppose a coin is tossed three times and let X be a random variable recording the number of times heads appears in each set of three tosses. (i) Write down the range of X. (ii) Determine the probability distribution of X. (iii) Determine the cumulative probability distribution of X. (iv) Calculate the expectation and variance of X.

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