Respuesta :

Answer:

Time spent in     Observed              Predicted                               Residual

studying (x)      midterm score   midterm score

12                            70                           60.5                                        9.5

18                             75                            83.34                                     -8.34

Step-by-step explanation:

Given, The equation of the line of best fit: [tex]y=3.8x+14.94[/tex] (which gives the predicted score.)

Time spent in studying of 12 hours i.e. at x=12, observed y= 70

Predicted y = [tex]3.8(12)+14.94=60.5[/tex]

Residual =Observed y - predicted y

= 70-60.5

= 9.5

Time spent in studying of 18 hours  i.e. at x=18, observed y= 75

Predicted y = [tex]3.8(18)+14.94=83.34[/tex]

Residual = Observed y - predicted y

= 75-83.34

= -8.34

Time spent in     Observed              Predicted                               Residual

studying (x)      midterm score   midterm score

12                            70                           60.5                                        9.5

18                             75                            83.34                                     -8.34

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