Mathematics, 06.10.2019 01:00 cchavcchav2944
Agas station earns $2.60 in revenue for each gallon of regular gas it sells, $2.75 for each gallon of midgrade gas, and $2.90 for each gallon of premium gas. let x1, x2, and x3 denote the numbers of gallons of regular, midgrade, and premium gasoline sold in a day. assume that x1, x2, and x3 have means μ1=1500, μ2=550, μ3=300, and standard deviations, σ1=180, σ2=100, σ3=35, respectively. a. find the mean daily revenue.
b. assuming x1, x2, and x3 to be independent, nd the standard deviation of the daily revenue.
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Agas station earns $2.60 in revenue for each gallon of regular gas it sells, $2.75 for each gallon o...
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