Intrigued by a 2013 study at the University of Nebraska, which suggested that ma

Question

Intrigued by a 2013 study at the University of Nebraska, which suggested that marijuana smokers may be thinner than other adults, a group of students did a project to explore the relationship between body mass index (BMI) an amount of time spent under the influence of marijuana (measured in hours per week). Based on a random sample 33 students at their university, they used BMI as the explanatory variable. The equation of the least-squares regression line is: Hours per month under influence = 49.2 - 1.15 BMI Calculate the residual for a student with an observed BMI of 25 and an observed hrs/month under the influence of 18 8. 6.20 -1.65 1.65 4.55

Explanation / Answer

here predicted value at BMI of 25 =49.2-1.15*25=20.45

hence residual =actual value-predicted value =18.8-20.45=-1.65

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

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