This left my head scratching, I can't seem to find the right answer despite it's simplicity


The regression equation is
GradRate = 30.4 + 0.00265 TotalCost

Predictor Coef SE Coef T P
Constant 30.385 3.930 7.73 0.000
TotalCost 0.0026459 0.0004462 5.93 0.000


S = 13.6574 R-Sq = 12.8% R-Sq(adj) = 12.4%


Analysis of Variance

Source DF SS MS F P
Regression 1 6557.5 6557.5 35.16 0.000
Residual Error 240 44766.1 186.5
Total 241 51323.6




Calculate the margin of error for the slope coefficient with 95% confidence (use six decimal places)

___.000880___

and 98% confidence (use six decimal places)

___.001046___

These answers were marked incorrect.

6.5 fg for the person who knows how to find the right answers