The California Department of Education makes available the academic performance index (API) for each school. The output that is provided models the 2012 API for a random sample of 100 high schools on the basis of the percentage of students receiving free or reduced-price meals. (Only schools that had at least one student receiving such meals were included.) Assume that all conditions for the linear regression model hold.
a. Write the equation of the regression line for predicting API score on the basis of the percent of the students who receive free or reduced-price meals.
b. Is there an association (using a 5% significance level) between the percent receiving free or reduced-price meals and the API score? Explain. If so, interpret the slope.

  • CreatedJuly 16, 2015
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