6. Dr. Barrett has run a test to predict verbal abilities (0-8) from number of siblings (0-6). He thinks that the more people you have to talk to when you are young (number of siblings) the more verbal you will be. He has already run the test in SPSS and below is the output. (Total 21 pts)

	Mean	SD	N
VerbalAbility	4.25	1.963	60
Siblings	3.45	1.817	60
Model	Sum of Squares	df	Mean Square	F	Sig.
1	Regression	181.874	1	181.874	232.470	.000a
Residual	45.376	58	.782
Total	227.250	59
Model	Unstandardized Coefficients	Standardized Coefficients	t	Sig.
B	Std. Error	Beta
1	(Constant)	.917	.247		3.717	.000
Siblings	.966	.063	.895	15.247	.000

A. What are the independent and dependent variables and how are each scaled (1 pt each; Total 4 pts)?

Independent:________________________ Scaling:_____________________________

Dependent:__________________________ Scaling:_____________________________

B. What test should Dr. Barrett use (4 pts)?__________________________________________________

C. Why that test (2 pts)?

D. For the Independent Variable (2 pts): Mean___________ Standard Deviation_________________

E. For the Dependent Variable (2 pts): Mean___________ Standard Deviation_________________

F. Should Dr. Barrett (2 pts)? Retain H₀ Reject H₀

H. Interpret the findings (5 pts):