A company makes a phone in 333 different colors. Tabitha wonders if an equal proportion of customers buy each color. She takes a random sample of 500 owners of this phone and records what color they have.
What type of statical test used in this case?
A. A χ2 goodness of fit test
B. A χ2 test for homogeneity
C. A two-sample z-test for a proportion
D. A χ2 test of independence
E. A t-test for slope
