Use the following information in order to answer questions 4-6. Jerome has kept track of the hours he spent studying and his marks on examinations. Subject Hours Studied Mark Mathematics, grade 9 70 English, grade 9 65 Science, grade 9 4 68 Geography, grade 9 72 French, grade 9 38 Mathematics, grade 10 74 English, grade 10 69 Science, grade 10 71 History, grade 10 75 Mathematics, grade 11 76 English, grade 11 9 74 Physics, grade 11 14 78 4. a) Create a scatter plot for Jerome's data and classify the linear correlation. b) Perform a regression analysis. Identify the equation of the line of best fit as y,, and record the correlation coefficient. c) Identify any outliers. d) Repeat part b) with the outlier removed. Identify this line as y2. 5. Which of the two linear models found in question 4 gives a more optimistic prediction for Jerome's upcoming biology examination? Explain.6. a) Identify at least three extraneous variables in Jerome's study. b) Suggest some ways that Jerome might improve the validity of his study