STATISTICS ASSIGNMENT HELP – DUE IN 2 HOURS
Question 4 of 23  1.0 Points 
In regression analysis, the variable we are trying to explain or predict is called the
A.residual variable  
B.independent variable  
C.regression variable  
D.dependent variable 
Question 5 of 23  1.0 Points 
The regression line y’ = 3 + 2.5 X has been fitted to the data points (28, 60), (20, 50), (10, 18), and (25, 55). The sum of the squared residuals will be:
A.20.25  
B.94.25  
C.49.00  
D.16.00  
Question 6 of 23  1.0 Points 
Two independent samples of sizes n1 = 50 and n2 = 50 are randomly selected from two populations to test the difference between the population means, . The sampling distribution of the sample mean difference, is:
A.normally distributed  
B.t – distributed with 98 degrees of freedom  
C.approximately normal  
D.chisquared distributed with 99 degrees of freedom 



























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