What is the sample correlation coefficient rxy between xi and yi?
Find the 95% confidence interval for the regression coefficient β1.
Test at a 0.05 level of significance to determine whether the regression coefficient β1 is larger than 20.
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What is the sample correlation coefficient rxy between xi and yi? Find the 95% confidence interval...
Find the sample variance of the dependent variable yi. What fraction of the sample variance in yi can be explained by the linear regression model? Find the coefficient of determination, r2. Find the adjusted r2 value. Do we have enough evidence to conclude that there exists a strong linear relationship between xi and yi? Find the p-value for the test. Problem. Chris Pratt is almost ready to pop the question to the girl of his dreams. He collected the data...