Imagine a regression line that relates y average systolic, Ask an Expert

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Imagine a regression line that relates y = average systolic blood pressure to x = age. The average blood pressure for people 30 years old is 120, while for those 50 years old the average is 130.

a. What is the slope of the regression line?

b. What is the estimated average systolic blood pressure for people who are 34 years old?

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