According to a recent study by the Annenberg Foundation, only 36% of adults in the U.S. could name all three branches of government. This was based on a survey given to a random sample of 1416 U.S. adults. Show that the conditions for calculating a confidence interval for a proportion are satisfied. 2. Calculate a 99% confidence interval for the proportion of all U.S. adults who could name all three branches of government. 3. Interpret the interval from Question 2.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
According to a recent study by the Annenberg Foundation, only 36% of adults in the U.S. could name all three branches of government. This was based on a survey given to a random sample of 1416 U.S. adults.
- Show that the conditions for calculating a confidence interval for a proportion are satisfied.
2. Calculate a 99% confidence interval for the proportion of all U.S. adults who could name all three branches of government.
3. Interpret the interval from Question 2.
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