A cell phone salesperson selects a random sample of 75 customers. For each customer, he records which cell phone provider (A, B, or C) they use and the type of phone they purchase. He would like to know whether there is convincing evidence that a customer’s cell phone provider is associated with the type of cell phone the customer purchases. Let = 0.05. What are the hypotheses for this test?

H0: Type of cell phone is not independent of the cell phone provider.
Ha: Type of cell phone is independent of the cell phone provider.
H0: Type of cell phone is independent of the cell phone provider.
Ha: Type of cell phone is not independent of the cell phone provider.
H0: The proportion of types of phones differs for cell phone providers.
Ha: The proportion of types of phones equals in cell phone providers.
H0: There is an association between type of cell phone and the cell phone provider.
Ha: There is no association between type of cell phone and the cell phone provider.