A music instructor wants assess the relationship between hou

A music instructor wants assess the relationship between hours spent in practice and the score in a national technical exam. She selects a random sample of 300 students and correlates their practice hours per week with their test scores. The relationship appears linear, the correlation is 0.42 and the p-value=.001. Which of the following statements are accurate?

   a.   There is strong evidence that the relationship is likely in the population.

   b.   A strong positive relationship exists between practice time and test scores.

   c.   There is marginal evidence that a relationship between practice time and test scores is likely in the population.

   d.   There is a moderate negative relationship between practice time and test scores.

Solution

c.   There is marginal evidence that a relationship between practice time and test scores is likely in the population.