Question

One month before an​ election, a poll of 660 randomly selected voters showed 57 % planning to vote for a certain candidate. A week later it became known that he had once nbsptried nbspan illegal drug​, and a new poll showed only 54​% of 1080 voters supporting him. Do these results indicate a decrease in voter support for his ​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.

Answer 1