use a ti 84 or something
y hat= 5.425x + 76.406
r= 0.78598
the value of r shows a linear strong positive relationship between hours studied and test score
x=4 yhat= 98.106
About 10% off since you divide 100 by 12 and times it by 13.2 so the percent comes to be 109.9 to you round up amd its 10 percent over