A medical study found a negative relationship between exercise (in minutes per w

Question

A medical study found a negative relationship between exercise (in minutes per week) and stress-related heath problems r-0.22). Which of the following conclusions is appropriate? Explain why the other is not appropriate (a) 4.84% of the variance in stress-related health problems can be explained by the amount of weekly exercise. (b) Increasing the amount of exercise per week will cause stress-related health problems to decrease. Conclusion (b) is appropriate. Conclusion (a) is not appropriate because it is impossible to determine the variance in stress-related health problems that can be explained by the amount of weekly exercise. O Conclusion (a) is appropriate. Conclusion (b) is not appropriate because increasing the amount of exercise per week will cause stress-related health problems to also increase. Conclusion (a) is appropriate. Conclusion (b) is not appropriate because correlations do not demonstrate cause. o conclusion (b) is appropriate. Conclusion (a) is not appropriate because the amount of variance that can be explained is 22%

Explanation / Answer

here as varaince explained =r2*100=(-0.22)2*100=4.84%

hence correct option is :

conclusion a is appropriate conclusion b is not appropriate becauise correlations do not demonstrate cause.

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