The data below are the final exam scores of 10 randomly selected calculus students and the number of hours they slept the night before the exam. Hours(x)
4
6
3
9
3
5
5
6
7
4
Scores(y)
64
79
59
87
65
77
84
89
89
70

1. Make a scatter plot for these data and determine the direction of the relationship between sleep hours and Scores.
2. Find the correlation coefficient (r) between Hours and Scores.
3. Determine whether there is a significant linear correlation between the two variables.
4. If there is a positive/negative linear correlation,
5. Find the equation of the regression line. and what is the best-predicted score of a student who slept 8 hours?