The Researcher Examines the Relationship Between Hours of Sleep and Average

Multiple Choice

The researcher examines the relationship between hours of sleep and average test scores and reports an r=0.56, p=0.02. You know this means:

A) there is a statistically significant correlation between sleep and test scores.
B) as hours of sleep increase average test scores do as well.
C) there is a strong positive relationship between the variables.
D) All of these answers are correct