math

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A contractor is considering a sale that promises a profit of $ 26,000 with a probability of .7 or a loss (due to bad weather, strikes, and such) of $ 4000 with a probability of .3. What is the expected profit.
Can someone help me with this.

  • math -

    Say he builds 100 houses with these ground rules
    70 at + 26,000 = +1,820,000
    30 at -4000 = - 120,000
    total = 1,700,000 for the 100 houses
    so
    17,000 profit per house

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