B3. You are hired by campus security to determine who locks themselves out of their ofce more often, graduate students or faculty. You record the number of times 10 faculty members and 10 graduate students (selected at random) lock themselves out of their ofce for one year and get the following data. a. Is this a study or an experiment (justify your answer) (1 mark) b. What would you conclude? (10 marks) 1, use this space as well J, Graduate Faculg Q D_2 3 4 -1 1 7 9 -2 4 5 9 -4 1 6 6 7 -1 1 3 8 -5 25 5 7 -2 4 8 7 1 1 1 8 -7 49 3 8 -5 25 2 Z i E IX 43 74 -31 151 2.2632 1.4298 2.4698 15.9405 B1. Your have been asked to estimate the snowfall for the month of February. In order to do this you gather information on the amount (ems) of snow that fell each February for the last 25 years and find that the average was 27.2 cms (SD = 10.5). If you want to be 99% certain in your estimate what range would you provide? (5 marks) 32. You think that the approval rating for Mayor Ford (from Toronto) has increased since he took ofce in 2010. You randomly select a group of people who all completed a satisfaction questionnaire immediately after the election who answered the question \"On a scale of l-100, what score would you give Mayor Ford (higher numbers indicate higher approval)", and ask them the same question now. The data are shown below. a. What is the independent variable? (1 mark) b. What is the dependent variable? (1 mark) c. What do you conclude? (10 marks) J, use this space as well 1, Approval Rating in 2 2919 2912 Q L 77 66 1 1 121 87 73 14 1 96 67 70 -3 9 78 67 1 1 121 62 55 7 49 80 81 -1 1 88 78 1 0 1 00 66 69 -3 9 68 56 1 2 1 44 65 62 3 9 2 Z & EX 794- 731 63 763 s 1 0.429 9.0704- 6.3418 69.405