a. What is the critical value from Pearson's Correlation Coefficient table for a set of data with sample size of 30. That is, n = 30. Use a level of significance of 0.05.
b. Suppose you computed r = -0.683 for a set a set of data with n = 15. What conclusion could you make?
BA) r is significant and the equation can be used for prediction.
BB) r is not significant and the equation can be used for prediction.
BC) r is not significant and the equation should not be used for prediction