As part of the marketing group at Pixar, you are asked to find out the age distribution of the audience of Pixar’s latest film. With the help of 10 of your colleagues, you conduct exit interviews by randomly selecting people to question at 20 different movie theaters. You ask them to tell you if they are younger than 6 years old, 6 to 9 years old, 10 to 14 years old, 15 to 21 years old, or older than 21. From 470 responses, you find out that 45 are younger than 6, 83 are 6 to 9 years old, 154 are 10 to 14, 18 are 15 to 21, and 170 are older than 21. For the age distribution:
a) Make a frequency table.
b) Make a relative frequency table.