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A student in Arch Hall would like to know the impact years of Education (YED) has on a graduate's yearly starting salary $000's. Recently, data

A student in Arch Hall would like to know the impact years of Education (YED) has on a graduate's yearly starting salary $000's. Recently, data associating YED with yearly starting salary in $000's (Y) was collected and summarized. The results are given below:

Multiple R

0.840220581

R Square

0.705970625

Adjusted R Square

0.676567688

Standard Error

0.48459412

Observations

12

ANOVA

df

SS

MS

F

Significance F

Regression

1

5.63835206

5.638352

24.0102073

0.000623096

Residual

10

2.348314607

0.234831

Total

11

7.986666667

Coefficients

Standard Error

t Stat

P-value

Lower 95% Upper 95%

Intercept

37.98089888

0.480493108

79.04567 2.5653E-15 36.91029351 39.0515042

YED

0.435955056

0.088970035

4.900021 0.0006231 0.237717463

0.63419265

Conduct a hypothesis test at the 0.01 level of significance to determine if a significant relationship exists between years of education and a graduate's yearly starting salary. Comment on the necessity of the independent variable in this regression model and explain why it may or may not be necessary.

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