Anew movie opened the other day. so far, 500,000 people have seen it. the producers of the movie needed to know if the people liked it. a random sample of 8,000 people leaving showings of the movie were asked if they liked the movie. of those interviewed, 4,200 enjoyed the movie. predict the total number of people who have enjoyed the movie.

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.