At White Clay Pottery, a kiln is used to bake ceramic pottery. The production manager wishes to determine the relationship between temperature and brittleness, so he takes measurements of the brittleness of test items versus the temperature of the oven in degrees C (see Table Q7 below). Table Q7: Measurements of the brittleness of test items versus the temperature of the oven in degrees C at White Clav Potterv (a) Use the Excel Regression tool to determine the regression equation. (3) (b) Determine the R2 value. Interpret your answer. (3) (c) If the oven is increase to 875C, predict the brittleness measure. (2) (d) Show the plot of the correlation between the two variables (i.e. Temperature line fit plot)