19
(Choose 1 answer)
(See picture)
A. 2.80
B. 2.66
C. 2.61
D. 3.12
It is believed that GPA (grade point average, based on a four point scale) should have a positive linear relationship with ACT scores.Given below is the Excel output for predicting GPA using ACT scores based a data set of 8 randomly chosen students from a Big-Ten university.
Regressing GPA on ACT
Regression Statistics
Multiple R
0.7598
R Square
0.5774
Adjusted R
Square Standard Error
0.5069
0.2691
Observations
8
ANOVA
af
SS
MS
F
Significance
F
Regression Residual
Total
0.5940 0.5940 8.1986 0.4347 0.0724
0.0286
6
1.0287
Coefficients
Intercept
ACT
0.5681 0.1021
Standard
Error t Stat 0.9284 0.6119 0.5630 -1.7036
P-value
Lower 95%
Upper 95%
0.0356 2.8633 0.0286
0.0148
2.8398 0.1895
Use the above information to find the predicted value of GPA when
