One of the questions Rasmussen Reports included on a 2018 survey of 1,007 likely voters asked if the country is headed in the right direction. Representative data are shown in the DATAfile RightDirection. A response of Yes indicates that the respondent does think the country is headed in the right direction. A response of No indicates that the respondent does not think the country is headed in the right direction. Respondents may also give a response of Not Sure. a)The researcher want to develop a confidence interval for the proportion of likely voters who do think that the country is headed in the right direction. What is the random variable? b)What is the 95% confidence interval for the proportion of likely voters who do think that the country is headed in the right direction? c) The researcher want to develop a confidence interval for the proportion of likely voters who do not think that the country is headed in the right direction. What is the random variable? d) What is the 95% confidence interval for the proportion of likely voters who do not think that the country is headed in the right direction?
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
One of the questions Rasmussen Reports included on a 2018 survey of 1,007 likely voters asked if the country is headed in the right direction. Representative data are shown in the DATAfile RightDirection. A response of Yes indicates that the respondent does think the country is headed in the right direction. A response of No indicates that the respondent does not think the country is headed in the right direction. Respondents may also give a response of Not Sure.
a)The researcher want to develop a confidence interval for the proportion of likely voters who do think that the country is headed in the right direction. What is the random variable?
b)What is the 95% confidence interval for the proportion of likely voters who do think that the country is headed in the right direction?
c) The researcher want to develop a confidence interval for the proportion of likely voters who do not think that the country is headed in the right direction. What is the random variable?
d) What is the 95% confidence interval for the proportion of likely voters who do not think that the country is headed in the right direction?
DATAfile RightDirection.
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