Data on tuition and mid-career salary are collected from a number of universities and colleges. The result of the data collection is the linear regression model ŷ=0.93x + 167 where = annual tuition and y = average mid-career salary of graduates, both in thousands of dollars. 1. Which quantity is the independent variable? average mid-career salary of graduates annual tuition 2. According to this model, what is the average salary for a graduate of a college or university where the annual tuition is $30,000? $ 3. What is the slope of this regression model?

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