Jessica has a part-time job. The table below shows her earnings based on the number of hours worked. Hours Worked, x 1 2 3 4 5 Earnings, E $8.20 $16.44 $25.68 $33.92 $41.16 Which equation best models this set of data? A. E = -8.24x2 + 1.04 B. E = 8.24x2 - 1.04 C. E = -8.24x + 1.04 D. E = 8.24x - 1.04

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.