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) and amount of time spent under the influence of marijuana (measured in hours per week). Based on a random sample of 33 students at their university, they used BMI as the response variable. The equation of the least-squares regression line is: Hours per Month Under Influence = 49.2 - 1.158MI Also, r^2 = 0 134.

Explanation / Answer

The correlation coeffecient is R , and you are already given r2 in the questions as a part of the regression analysis

so r2 = 0.134

and r = sqrt(r2)= sqrt(0.134)

= 0.366 , the correlation coefficient is low

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