This was the first United States political party. In 1796, anti-Federalists<span> gathered around Jefferson. Members of Jefferson's group called themselves </span>Democratic-Republicans<span>. Northern businessmen, bankers, and merchants supported </span>the Federalists<span>.</span>
<u>Answer:
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The study carried out by Dr. Xu is a randomized controlled study.
<u>Explanation:</u>
- For the sake of determination of how the results of the students change by doing certain changes to the examination pattern, Dr. Xu devised that the change is considerably evident.
- Dr. Xu provided and intervention in the process of exam in the form of guides which helped the students to score better later. Hence, from the standard of conduct of the study, it can be said to be a randomized controlled study.
No, 3 hours equals 180 minutes are out of this confidence interval.
<h3>What is confidence interval?</h3>
A confidence interval (CI) is a range of estimates for an unknown parameter in frequentist statistics. The 95% confidence level is the most popular, however other levels, such 90% or 99%, are occasionally used when computing confidence intervals. The percentage of related CIs over the long run that include the parameter's actual value is represented by the confidence level. For instance, 95% of all intervals calculated at the 95% confidence level should include the parameter's actual value. The degree of confidence, the size of the sample, and the sample's variability are all factors that might impact the breadth of the CI.
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