Question: Doctors and life expectancy and TVs Chapter 8 looked at the data on life expectancy in different countries as they related to the (square root

Doctors and life expectancy and TVs Chapter 8 looked at the data on life expectancy in different countries as they related to the (square root of the) number of doctors and to the (square root of the) number of TVs. Here’s a regression using both variables to predict life expectancy,

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