TABLE 14-14 An Automotive Engineer Would Like to Be Able to Predict

question 189

Short Answer

TABLE 14-14
An automotive engineer would like to be able to predict automobile mileages. She believes that the two most important characteristics that affect mileage are horsepower and the number of cylinders (4 or 6) of a car. She believes that the appropriate model is
Y = 40 - 0.05X₁ + 20X₂ - 0.1X₁X₂
where X₁ = horsepower
X₂ = 1 if 4 cylinders, 0 if 6 cylinders
Y = mileage.
-Referring to Table 14-14, the predicted mileage for a 300 horsepower, 6-cylinder car is ________.

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Definitions:

First Serve

In tennis or related sports, the initial serve in a point, where the server has two opportunities to make a successful serve.

Probability

A numerical expression, ranging between 0 and 1, used to indicate how probable it is that a given event will happen, where 0 means the event is impossible, and 1 means the event is certain to happen.

Independent

A term describing variables that are not affected by other variables in a study or experiment.

Normal Model

A type of statistical distribution that is symmetric and has a bell-shaped curve, where most occurrences take place at the center of the distribution.