In a certain class, the final exam counts for 15% of a student's final grade. Suppose that a sample of students' grades indicates that the correlation between a student's final exam score and the student's overall course grade is r = 0.94. Which of the following statements best describes the relationship between the two variables? There is a strong positive correlation between final exam score and overall course grade. There is also a causal relationship between the two variables since one directly affects the other. There is a strong positive correlation between final exam score and overall course grade, but there is not enough information to determine whether the two variables have a causal relationship. Another variable may be responsible for the correlation observed. There is no relationship between final exam score and overall course grade