# Statistics: T-test: Testing hypotheses – #29531

Question: Based on the data from six students, the regression equation relating the number of hours of preparations (x) and test score (y) is $\hat{y}=67.3+1.07x$. The same data yield an r = 0.224 and a $\bar{y}=75.2.$ What is the best predicted test score for a student who spent 3 hours preparing for the test? Think before acting on this problem. Remember the temperature is the independent variable.