Alzheimers disease is a progressive disease of the brain. Much research has been conducted on how to

Question:

Alzheimer€™s disease is a progressive disease of the brain. Much research has been conducted on how to treat Alzheimer€™s. The journal eCAM (November 2006) published an article that critiqued the quality of the methodology used in studies on Alzheimer treatment. For each in a sample of 13 studies, the quality of the methodology was measured on the Wong scale, with scores ranging from 9 (low quality) to 27 (high quality). The data are shown in the table and saved in the TREATAD file. Estimate, with a 99% confidence interval, the mean quality p, of all studies on the treatment of Alzheimer€™s disease. Interpret the result.