The below numbers represent the amusement park ride tickets bought by the first 10 families to arrive at a carnival. How many tickets will the next family need to buy to keep the average number of tickets the same? 25, 30, 15, 10, 11, 22, 17, 19, 20, 11
Group of answer choices

11

18

20

25

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.