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Biased coin has a 0.4 probability of landing on tails. The random variable x, based on a single toss of the coin, is defined as follows: x=0 if heads appears; x=1 if tails appears. What Is the mean value of X?

Is it .

  • Probabilty -

    For each coin toss, the probability of x=1 is 0.4.

    The mean value of X for n tries is :

    (0.4(1)*n)/n = 0.4

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