a) The movie rated for general audience would be viewed by both children and adults. Recall, the numbers represent the ages while the dots attached represents the number of viewers of that age. Thus, we can see that for movie B, The viewers include children from 3 to 10 years, adults from 26 to 32 years, adults from 31 to 54 years. Thus, Movie B is the correct answer
b) Looking at movie C, we can see that the range of the ages is between 21 to 39. The center of 21 and 39 is 30(Recall, 21 + 39 = 60. 60/2 = 30). Thus, option C is correct
c) The typical age means the age with the most frequency or number of dots. Looking at movie A, ages 39 and 43 have 4 dots. This means that they occured most frequently. Thus, the typical ages for movie A are 39 and 43 years