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Compute the expected payoff, variance, and the standard deviation for each of the following
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Compute the expected payoff, variance, and the standard deviation for each of the following probability distributions:

Instructions: Round your answers to 2 decimal places.

a. A payoff of 200 with a probability of 0.4 and 500 with a probability of 0.6.

    Expected payoff = .

    Variance = .

    Standard deviation = .

b. A payoff is 110 with a probability of 0.2; 130 with a probability of 0.3; 150 with a probability of 0.1; and 170 with a probability of 0.4.

    Expected payoff = .

    Variance = .

    Standard deviation = .

c. Every possible payoff that's a whole number between (and including) 100 and 200, each with the same probability.

    Expected payoff = .

    Variance = .

    Standard deviation = .
 

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