In a test for significance of a Pearson correlation for a sample of n = 30 individuals, you determine the critical value by using df = 29

The most widely applied method of biofeedback for the treatment of anxiety disorders is the:

A)EKG. B)EEG. C)EMG. D)ECT.

Food additives (dyes, preservatives, toxins) are the main cause of ADHD.

a. true b. false