Final answer:
The question asks if a case with x = 2 and y = 6.2 qualifies as an outlier in a regression analysis. The slope of the least squares regression line is given as 0.3 and the standard deviation of residuals is 0.4.
Step-by-step explanation:
The question is about regression analysis and determining the slope of the least squares regression line. To find the slope of the line, we need to calculate the standard deviation of residuals (s). In this case, the standard deviation of residuals is given as 0.4. We can use the formula y = a + bx, where b is the slope, to calculate the slope of the line. Since the slope of the regression line is 0.3, we know that a case with x = 2 and y = 6.2 does not qualify as an outlier.