The following display from the TI-84 Plus calculator presents the least-squares regression line for predicting a students
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The following display from the TI-84 Plus calculator presents the least-squares regression line for predicting a student’s score on a statistics exam (y) from the number of hours spent studying (x).
a. Write the equation of the least-squares regression line.
b. What is the correlation between the score and the time spent studying?
c. Predict the score for a student who studies for 10 hours.
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