Suppose that for a sample of 65 observations from a population of 500, the sample mean is 25.6 and the sample standard deviation is 2.8. Create a 90 confidence interval for the population mean.
A) 25.6 0.318
B) 25.6 0.415
C) 25.6 0.467
D) 25.6 0.533
Question 2
The value of the variation explained by the regression line can never be smaller than 0.0.
Indicate whether the statement is true or false