ABC Incorporated Asked a Sample of Residents in Each of Two

Multiple Choice

ABC Incorporated asked a sample of residents in each of two cities to indicate the brand of shampoo most preferred by them.They found that 40 percent of the people in City 1 preferred Brand A, as compared with 30 percent in City 2.The results indicate that 1-Brand A is more popular with the sample respondents in City 1. 2-Brand A is more popular with the residents in City 1. 3-a hypothesis test of the significance of the difference in sample percentages is needed before any conclusions about differences in population can be made.

A) 1
B) 2
C) 3
D) 1 and 3
E) 1 and 2