Walter is testing to see if hours of study can predict test score. He gets a sample of 26 people. He calculates the regression line. It is Score = 34+5(StudyTime)+6(SleepTime) - 10(StressLevel). The R² = .551. The standard deviation of Test score is 35 points, the standard deviation of Study Time is 4 hours, the standard error of the equation is 25 points. Is study time significant? (Doing a two-tailed test where alpha equals .05) Show all your work. State the critical value. State what we do with the null hypothesis, and then state what that means about the relationship between the two variables.