Given a||b and c is not parallel to a or h which of the following are true?

choose all answers that are correct.

a. m< 8 + m< 10 = 180

b. m< 4 + m< 6 = 180

c. m< 1 + m< 11 = 180

d. m< 3 + m< 5 = 180

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.