Linda Silbers is a social scientist studying voter opinion about a city bond proposal for a light-rail mass transit system in Denver. Linda wants to estimate the proportion of voters who favor the bond. She wants to be 95% sure that her sample estimate of the proportion of voters who favor the bond is in error by no more than 5%. How large a sample should she use? If a preliminary study showed that is approximately 73%, she should use a sample of voters. If she has no preliminary estimate for p, she should use a sample of voters.
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.
Linda Silbers is a social scientist studying voter opinion about a city bond proposal for a light-rail mass transit system in Denver. Linda wants to estimate the proportion of voters who favor the bond. She wants to be 95% sure that her sample estimate of the proportion of voters who favor the bond is in error by no more than 5%. How large a sample should she use?
If a preliminary study showed that is approximately 73%, she should use a sample of voters.
If she has no preliminary estimate for p, she should use a sample of voters.
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