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An ordinary (fair) coin is tossed 3 times. Outcomes are thus triples of "heads" (h) and "tails" ( t ) which we write hth,ttt , etc. For each outcome, let N be the random variable counting the number of heads in each outcome. For example, if the outcome is hhh , then N(hhh)=3 . Suppose that the random variable x is defined in terms of N as follows: x=N-2 . The values of x are given in the table below. \table[[Outcome, -hht , tth , thh , ttt , hth , htt , hhh , tht