Chemistry homework help. Interpreting Simple Linear Regression1. Linear correlation coefficient r = 0.7945562. Coefficient of Determination ( r square) 0.6313193. Standard Error of the estimate = 12.96684. SSR (Explained variation) = 5182.415. SSE ( Unexplained variation) = 3026.496. SST = 8208.907. Predicted equation or equation of the regression line (Y predicted or hat) = 0.725983X + 16.55238. Level of Significance = 0.19. Critical Value= 0.37841910. t test = 0.794556Questiona.What is meant by a hypothesis? What is the null hypothesis in this exampleb.What is the meant by the standard error of the estimate? Which number measures the scatter of points about the regression line?