1. On a 20 question test, Sarah got 2 questions wrong. What percent of the test does he have correct? 2. 4 out of 5 people have at least 1 pet at home. Out of 300 people, how many would you expect to not have any pets?

The table respent two linear functions the equation respented by the first tables is given

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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.