Two randomly selected groups of citizens were exposed to different media campaigns that dealt with the image of a political candidate. One week later, the citizen groups were surveyed to see whether they would vote for the candidate.The results were as follows:

Is there sufficient evidence to show a difference in the effectiveness of the two image campaigns at the 0.05 level of significance?
a. Solve using the p-value approach.
b. Solve using the classical approach.

Exposed to Exposed to sve moge Modercte lmage Conservati Number in Sample Proportion for the Candidate 100 0.40 100 0.50