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Statistic Question Regarding Election?

For this participation assignment, I would like you to find two different polling data results for the 2020 Presidential election. (Note: find polls that were conducted before the election!) Give the date each poll was conducted, who was surveyed and how, the % for each candidate, and the margin of error for each poll. Using the margin of error, construct a confidence interval for each candidate for each poll. Explain what the confidence intervals tell you (e.g., who do you predict the winning candidate will be? was the confidence interval prediction correct?). For this assignment, you will be awarded 4 points for the attempt and 4 points for the background information you provide (e.g., %s, the margin of error), correctness of your confidence intervals, and interpretation of those confidence intervals.

Am really struggling to understand this assignment. 

1 Answer

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  • fcas80
    Lv 7
    1 month ago

    Here is a data source:  https://fivethirtyeight.com/

    For any sample with only two outcomes where you know the number sampled n , the sample proportions p hat, and 1 - p hat, the confidence interval is p hat plus or minus z * squareroot[ p hat * (1 - p hat) / n].

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