The following data, compiled by the admissions office at Faber College during the past 5 years, relate the number of college brochures and follow-up letters (x) sent to a preselected list of high school juniors who had taken the PSAT and the number of completed applications (y) received from these students (both measured in units of 1,000). Determine the equation of the least-squares line for these data. Use the result obtained to predict the number of completed applications that might be expected if 6,400 brochures and follow-up letters are sent out during the next year.
A) y = 0.33x - 1; 1,324 applications
B) y = 0.33x - 1; 1,301 applications
C) y = 0.34x - 0.9; 1,276 applications
D) y = 0.34x - 0.9; 1,310 applications

Question

The following data, compiled by the admissions office at Faber College during the past 5 years, relate the number of college brochures and follow-up letters (x) sent to a preselected list of high school juniors who had taken the PSAT and the number of completed applications (y) received from these students (both measured in units of 1,000).  Determine the equation of the least-squares line for these data. Use the result obtained to predict the number of completed applications that might be expected if 6,400 brochures and follow-up letters are sent out during the next year.
A) y = 0.33x - 1; 1,324 applications 
B) y = 0.33x - 1; 1,301 applications 
C) y = 0.34x - 0.9; 1,276 applications 
D) y = 0.34x - 0.9; 1,310 applications

Quizplus · Accepted Answer

The Answer of The following data, compiled by the admissions office at Faber College during the past 5 years, relate the number of college brochures and follow-up letters (x) sent to a preselected list of high school juniors who had taken the PSAT and the number of completed applications (y) received from these students (both measured in units of 1,000).  Determine the equation of the least-squares line for these data. Use the result obtained to predict the number of completed applications that might be expected if 6,400 brochures and follow-up letters are sent out during the next year.
A) y = 0.33x - 1; 1,324 applications 
B) y = 0.33x - 1; 1,301 applications 
C) y = 0.34x - 0.9; 1,276 applications 
D) y = 0.34x - 0.9; 1,310 applications

The Following Data, Compiled by the Admissions Office at Faber