Setting: U.S. Auto manufacturers are trying to develop a multivariate function with which to estimate the demand for their gas-electric hybrid compact cars. Here is one that Motors General developed for its Jolt: Qj = 65000 – 20Pj + 20Pf + 35Pt – 5Pb + 0.2Tc + 0.05Y + 10Mg + 0.04A Where Qj = the number of Jolts demanded per week. Pj = the price of each new Jolt (in $). Pf = the price of each new Ford gas-electric hybrid (in $). Pt = the price of each new Toyota gas-electric hybrid (in $). Pb = the price of replacement batteries for the Jolt (in $). Tc = the amount of tax credit incentive offered with the purchase of a new hybrid (in $). Y = average weekly disposable income of a typical Jolt purchaser (in $). Mg = the miles per gallon of gas rating of the Jolt (in miles per gallon). A = average weekly Jolt advertising expenditure (in $). 6 If all variables remain unchanged except that the price of the Toyota hybrid (Pt) decreases by $500, then the demand for Jolts will: 7 Engineering increases the miles per gallon of gas rating (Mg) by 10 miles per gallon. The manager of the advertising department should point out that demand for Jolts will: 8 You can tell by looking at the sign Ford hybrids (Pf) that Ford hybrids are being considered:
Setting: U.S. Auto manufacturers are trying to develop a multivariate function with which to estimate the
Qj = 65000 – 20Pj + 20Pf + 35Pt – 5Pb + 0.2Tc + 0.05Y + 10Mg + 0.04A
Where
Qj = the number of Jolts demanded per week.
Pj = the price of each new Jolt (in $).
Pf = the price of each new Ford gas-electric hybrid (in $).
Pt = the price of each new Toyota gas-electric hybrid (in $).
Pb = the price of replacement batteries for the Jolt (in $).
Tc = the amount of tax credit incentive offered with the purchase of a new hybrid (in $).
Y = average weekly disposable income of a typical Jolt purchaser (in $).
Mg = the miles per gallon of gas rating of the Jolt (in miles per gallon).
A = average weekly Jolt advertising expenditure (in $).
6 If all variables remain unchanged except that the price of the Toyota hybrid (Pt) decreases by $500, then the demand for Jolts will:
7 Engineering increases the miles per gallon of gas rating (Mg) by 10 miles per gallon. The manager of the advertising department should point out that demand for Jolts will:
8 You can tell by looking at the sign Ford hybrids (Pf) that Ford hybrids are being considered:
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