Given the estimated regression equation below, answer the following: (from 19 to

Question

Given the estimated regression equation below, answer the following: (from 19 to 22). -70.1783 + 4.1786x 19. The y represents.. a. as the predicted value of y given a value ofx; b. as the independent variable from the given certain sample; c. as the sample y-intercept of the straight line d. None of the above 20. The calculated value b 4.1786 and we can conclude that each additional hour a. an average decrease of 4.1786 points in exam scores; b. an average increase of 1 point in exam scores; c. an average increase of 4.1786 points in exam scores; d. an average increase of zero point in exam scores; 21. Ifx 7, then the predicted value would be... a. 95.0066 b. 99.4285 c. 99.0713 d. None of the above 22. If x-7, then the predicted value would be... a. 40.2359 b. 40.9281 ?. 41.2853 d. None of the above

Explanation / Answer

19)

Y is dependent variable and x is independent variable. Value of x determines the value of Y.

Hence, right answer is (a)

20)

4.1786 is coefficient and depicts relationship between independent and dependent variable.

It shows average rise.

Hence right answer is (c )

21)

Y = 70.1783 + 4.1786 (7)

    = 99.4285

Right answer is (b)

22)

Y= 70.1783 + 4.1786 (-7)

= 40.9281

Right answer is (B)

Related Questions

Navigate

• Browse (All)
• Browse G
• Subjects

---

---

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