Q1 (a) A fair coin is tossed 5 times and the random variable X counts the number of heads that come in the 5 tosses. Use the definition of expected value for discrete random variables to compute the expected value of X. (b) The continuous random variable T has f(t) =  2/t3 t ≥ 1 0 t < 1 as its probability density function. Use the definition of expected value for continuous random variables to compute the expected value of T.

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