Aclassroom of children has 11 boys and 20 girls in which five students are chosen at random to do presentations. what is the probability that more boys than girls are chosen?

a) 0.0027
b) 0.0388
c) 0.2234
d) 0.1872
e) 0.2261
f) none of the above.

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.