Suppose that a least squares regression yields the following estimate: where W is the hourly wage rate

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Suppose that a least squares regression yields the following estimate:image text in transcribed

where W is the hourly wage rate (in dollars) and A is the age (in years).
A second regression from another group of workers yields this estimate:image text in transcribed

a. How much is a 20-year-old predicted to earn based on the first estimate?

b. How much is a 20-year-old predicted to earn based on the second estimate?

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