The principal of a high school wants to survey the community about a new mascot design . Choose the two most appropriate methods of selecting a random sample of individuals to survey .
a) choose 15 students from every grade level in the school .
b) choose every person the principal knows in the community
c) choose every 10th name on a list of all residents of the community
d) choose 50 random people from the crowd at the next school basketball game
e) choose 50 names from a hat containing the name of every resident of the community