The following data refers to the OAC average grades of students being accepted into first year of several Ontario universities. Grade Distribution of New 1st Year Students University 60 - 70 70 - 75 75 - 80 80 - 85 85 - 90 > 90 Brock 5.8 22.1 26.7 26.0 13.1 6.3 Guelph 0 0.2 27.6 37.9 21.4 12.9 McMaster 0.1 10.5 24.2 32.4 19.7 13.1 Queen's 0 0.2 3.2 21.9 36.8 37.9 Ryerson 0.5 23.0 31.0 29.3 12.4 3.8 Toronto 0 1.2 8.9 26.0 36.6 27.3 REMARKS: This was ACTUAL DATA OF THE ONTARIO University Population in 2010! The line with number ranges are classes, e.g., 60-70 so midpoints MUST be used. Use 95 for 902! The numbers in the tables are percentages that add up to 100 in each row. a) Based on the above data, is the average entering grade higher for Brock or Ryerson, or is the average about the same? Which of the following is the best answer? O A. There is not sufficient information to make a decision. O B. The entering grades at Brock are at least 1% higher than the entering grades at Ryerson. O C. The entering grades at Brock and Ryerson are within 1/2 of 1% of each other O D. The entering grades at Ryerson are at least 1% higher than the entering grades at Brock.(b) Now consider Toronto compared to Queen's-->which of the following is the best answer? O A. The entering grades at Queens and Univ. of Toronto are within 1/2 of 1% of each other O B. The entering grades at Queens are at least 1% higher than the entering grades at Univof Toronto. O C. There is not sufficient information to make a decision. O D. The entering grades at Univof Toronto are at least 1% higher than the entering grades at Queens. (c) (i) The sample standard deviation of the entering grades at Ryerson is Round to 2 decimal places. (ii) The sample standard deviation of the entering grades at Brock is Round to 2 decimal places. Use ratios of numbers with 2 decimal places to compute & show answers to 1 decimal place for (iii) and (iv) using the ROUNDING RULE : express CV with 1 decimal point if CV10% . Recall: Use the Sample (not population) std. dev. (iii) The coefficient of variation of Brock is (iv) The coefficient of variation of Ryerson is (v) The variability of the entering grades at Brock are significantly higher than those at Ryerson O True O FalseThe following table is of profit, revenue, and number of employees of 10 companies. Profit US $ billion Revenue/employee No. of Employees US$ Exxon 11.5 96, 180 122900 Royal Dutch 7.4 74,285 105000 British Petroleum 4.5 70,855 56470 Petrofina SA 2.7 67,397 69068 Texao In 3.2 92, 102 29313 Elf Aquitaine 0.93 11,461 83600 ENI 3.7 37,418 80173 Chevron Corp. 3.7 84,622 39368 PDVSA 4.6 84,821 56599 SK 0. 135 4,088 30596 a) For the 10 companies, the mean profit per company is $ billion US. (Round answer to one decimal place.) b) The "overall" mean revenue per employee (i.e., for all employees of these firms combined) of the 10 companies is $ US. (Round answer to nearest whole number.) c) The "overall" mean profit per employee is $ US/employee. (Round answer to nearest whole number.)