One month before an election, a poll of 690 randomly selected voters showed 52% planning to vote for a certain candidate. A week later it became known that she had lied to avoid jury duty, and a new poll showed only 50% of 1070 voters supporting her. Do these results indicate a decrease in voter support for her candidacy?
A) Test an appropriate hypothesis and state your conclusion.
B) If you concluded there was a difference, estimate that difference with a 99% confidence interval and interpret your interval in context.