You Have Conducted a Study Using a Therapy Technique to Reduce

Multiple Choice

You have conducted a study using a therapy technique to reduce depression.Out of 10 clients,you found a reduction for 6 of them.Can we conclude that the therapy technique works?

A) This cannot be determined until a z-score is calculated and compared with an alpha level criterion.
B) Yes,because 6 is more than chance.
C) The technique will only work if the calculated mean is at least 6 and the standard deviation is at least 5.
D) This cannot be determined until the correction for continuity is applied to the data.