Post by: segrsyd on Feb 14, 2020
Question 1
The number of absences and the final grades of 9 randomly selected students from a statistics class are given below. Can you conclude that there is a correlation between the final grade and the number of absences? Use
Question 2
The table below lists the verbal and math SAT scores of 10 students selected at random. Test the hypothesis of no correlation between verbal and math SAT scores. Use
Post by: yasmina on Feb 14, 2020
Answer 1
critical values ±0.883; test statistic rs ≈ -0.996; reject H0; There is enough evidence to conclude that there is a significant correlation between the final grade and the number of absences.Answer 2
critical values ±0.648; test statistic rs ≈ -0.006; fail to reject H0; There is not enough evidence to conclude that there is a significant correlation between verbal and math SAT scores.