THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 213

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A professor investigated some of the factors that affect an individual student's final grade in his course.He proposed the multiple regression model Y = β₀ + β₁X₁ + β₂X₂ + β₃X₃ + ε ,where Y is the final mark (out of 100),X₁ is the number of lectures skipped,X₂ is the number of late assignments,and X₃ is the mid-term test mark (out of 100).The professor recorded the data for 50 randomly selected students.The computer output is shown below.
The regression equation is
= 41.6 - 3.18x₁ - 1.17x₂ + 0.63x₃.

S = 13.74 R-Sq = 30.0%
ANALYSIS OF VARIANCE

-Does the data provide enough evidence to conclude that,at the 1% significance level,the final mark and the mid-term test mark show a positive linear relationship?

---

Definitions:

Heart Damage

Physical injury to the heart muscle, which can affect its ability to pump blood effectively.

Bag-mask Device

A hand-held device used to provide positive pressure ventilation to a patient who is not breathing or not breathing adequately.

Auscultate

The act of listening to the sounds made by the internal organs of the body, typically with a stethoscope, as part of a medical examination.

Chest Radiograph

An X-ray image of the chest used to evaluate the lungs, heart, and chest wall.