High School Students Were Interested in a Teacher's Claim That

Short Answer

High school students were interested in a teacher's claim that the length of time (hours) that a student studies for a test, the higher the test score. The students collected the data and the teacher did the regression analysis with the following results.
To test the null hypothesis that the slope is zero, what are the t-test statistic and the t-critical value using the 0.05 significance level?