1. Find the slope of the line that contains (-2,2) and (-10,-9). A. 8/7 B. 11/12 C. 12/11 D.7/8
2. Find the slope of the line that contains (10,-1) and (-8,6). A. 2/5
B. − 7/18 C. −18/7 D. 5/2

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.