The probable total dollar value of all sale is $ 675.
Given that a salesman has scheduled two appointments to sell vacuum cleaners, and his first appointment will lead to a sale with probability 0.3, and his second will lead independently to a sale with probability 0.6, and any sale made is equally likely to be either for the deluxe model, which costs $ 1000, or the standard model, which costs $ 500, to determine the probability mass function of the total dollar value of all sale, the following calculation must be performed:
Therefore, the probable total dollar value of all sale is $ 675.
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