In: Statistics and Probability
One month before an election, a poll of 650 randomly selected voters showed 59% planning to vote for a certain candidate. A week later it became known that he had
lied to avoid jury duty and a new poll showed only 57% of 1010
voters supporting him. Do these results indicate a decrease in voter support for his candidacy?
a) Test an appropriate hypothesis and state your conclusion. (z = (Round to two decimal places as needed.)
b) If you concluded there was a difference, estimate that difference with a 99% confidence interval and interpret your interval in context.