For the third marking period, Joey was reviewing his 7 test scores. On his report cart, He received a grade of a 90. While reviewing his scores, ye realized that he was missing one. He had the following test scores: 85, 90, 85, 95, 85, and 95. What’s Joey’s missing test score? Provide mathematical proof and reasoning for how you found the missing test score

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.