For the sample of top-rated universities, the graduation rate has mean 82.7% and

arenceabigns

arenceabigns

Answered question

2021-09-14

For the sample of top-rated universities, the graduation rate has mean 82.7% and standard deviation 8.3%. The student/faculty ratio has mean 11.7 and standard deviation 4.3. The correlation is -0.52.
(Note: use proportion for graduation rate.)
a. Find the equation of the least squares line for predicting graduation rate from student/faculty ratio.
Let γ=αx+β Find A and B.
(round to five decimal places)
B=
(round to three decimal places)
b. Find the equation of the least squares line for predicting student/faculty ratio from graduation rate.
Let γ=Cx+D. Find C and D.
C=
(round to five decimal places)
D=
(round to five decimal places)

Answer & Explanation

Raheem Donnelly

Raheem Donnelly

Skilled2021-09-15Added 75 answers

A=(0.52×0.0834.3)
=0.01004
B=0.827+0.01004×11.7=0.944
=26.93980
D=11.7+26.93980×0.827=33.97918

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