In a comparison of the life expectancies of two models of washing machines, the average years before breakdown in an SRS of 10 machines of one model, which is compared with that of 15 machines of a second model. The 95% confidence interval estimate of the difference is (6,12). Which is the most reasonable conclusion? A. We are 95% confident that the difference in mean life expectancies is between 6 and 12 years B. The mean life expectancy of one model is twice that of the other model C. The probability the life expectancies are different is .95
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.
B. The mean life expectancy of one model is twice that of the other model
C. The
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