(Solved): Ir am be difficult for a Democrat or Republican political candidate to escape the public's opinion o ...

Ir am be difficult for a Democrat or Republican political candidate to escape the public's opinion of the candidate's party. Public perception of the candidate tends to correspond to public perceptions of the candidate's party, but sometimes candidates are significantly more or less popular than their parties. In this exercise, you'll compare feeling thermometer ratings for Joe Biden before the 2020 election (ft_biden_pre) to contemporaneous feeling thermometer ratings of the Democratic Party (ft_dem) as measured in the NES Dataset. Conduct a rwo-sample difference-of-means test to assess whether the mean of the NES Dataset's fr_biden_pre variable is significantly greater than the mean of its ft_dem variable. For this analysis, don't assume that the variables have equal variances, but be sure to weight observations using the wt variable.

A. Start with descriptive statistics. The observed mean of ft_biden_pre is

The observed mean of ft_dem is

B. The observed difference between the mean Biden feeling thermometer score and the mean Democratic Party feeling thermometer score is

The expected difference of means (based on the

assumption that there is no difference) is

C. Which of the following embodies the research hypothesis? (select one) ((