The two regressions below show Profitability for companies from the Forbes 500 list as a function of company specifics. Conduct a Partial F-Test to analyze if adding the variables Assets and Sales is worthwhile. Use a level of significance of 5%. Show all of your work in the space below; correct but unsupported answers will be assigned a score of zero. Provide a verbal conclusion of your findings.

ANOVA	df	SS	MS	F		ANOVA	df	SS	MS	F
Regression	1	28775089	28775089	106.69		Regression	3	32844180	10948060	49.17
Residual	77	20768358	269719			Residual	75	16699267	222657
Total	78	49543447				Total	78	49543447
	Coefficient	t Stat	P-value				Coefficient	t Stat	P-value
Intercept	-144.18	-2.13	0.04			Intercept	-178.83	-2.75	0.00
Employees	9.42	10.33	0.00			Assets	0.00	0.02	0.98
						Sales	0.09	3.27	0.00
						Employees	0.88	0.38	0.71