Between April 13-14th, 2016, Rasmussen’s polling organization asked 1,000 American adults “Currently, who pays a larger share of their income in taxes—wealthy Americans or middle-class Americans?” 71% responded that middle class American pay a larger share of their income in taxes than wealthy Americans. The margin of error was +/- 3 percentage points with a 95% level of confidence. Calculate a 95% confidence interval for the percentage of all American adults who believe that middle class American pay a larger share of their income in taxes than wealthy Americans.  % to  %

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.