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An investment will be worth $1000, S2000, or $5000 at the end of the year. The probabilities of these values are 0.25, 0.60, and 0.15,
An investment will be worth $1000, S2000, or $5000 at the end of the year. The probabilities of these values are 0.25, 0.60, and 0.15, respectively. Determine the mean and the variance of the worth of the investment
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