Compute the expected number of barrels that will be sol on, Ask an Expert

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The Smith Pub sells a large quantity of beer every Saturday. From past sales the records, the pub has determined the following probabilities for sales:

Barrels Probability
6             .10
7             .20
8             .40
9             .25
10           .05
1             .00

Compute the expected number of barrels that will be sol on Saturday. (Answer to Whole numbers)

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