A study of demand for imported subcompact cars incorporates data from 12 metropolitan area...

A study of demand for imported subcompact cars incorporates data from 12 metropolitan areas. The variables are as follows:

Demand: Imported subcompact car sales as a percentage of total sales

Educ: Average number of years of schooling completed by adults

income: Per capita income

Popn: Area population

Famsizc: Average size of intact families

Minitab output is as follows.

a. Write the regression equation. Place the standard error of each coefficient below the coefficient, perhaps in parentheses.

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b. Locate R2 and the residual standard deviation.

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c. The Unusual Observations entry in the output indicates that observation 9 had a value 2.07 standard deviations away from the predicted Fit value. Does this indicate that observation 9 is a very serious outlier?