Refer to the part b of 4.64: What is the rejection region for the test? A. Rejec

Question

Refer to the part b of 4.64: What is the rejection region for the test? A. Reject H0 if F> 4.21 B. Reject H0 if F> 4.20 C. Reject H0 if F> 4.18 D. Reject H0 if F> 4.17
What is the conclusion of the test performed in part b?
A. There is insufficient evidence to indicate the addition of the aggression rating improves the predictive ability of the model.
B. There is sufficient evidence to indicate the addition of the aggression rating improves the predictive ability of the model.
C. How would I know?
D. Feeling lucky

Explanation / Answer

answer of first part)

here total degree of freedom df=31

error df=29

addtitioal regression coeffeicent df =1

the crtiticval F-value for addtional regression coefficietnt at 5% level of significance=F(0.05,1,29)=4.18

if F>4.18 tthen we reject Ho.

answer of second part=

F=(SSE1-SSE2)/SSE2=(26.01-25.44)/25.44=0.22 which is less than critical F=4.18

so there is insufficient evidence to indicate the addition of the aggression rating improves the predictive ability of the model. answer is A

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.