Discuss the below:
In an investigation of the possible brain damage due to alcoholism, CAT scans were used to measure brain densities in eleven chronic alcoholics. Each alcoholic was paired with a non-alcoholic control selected to match the alcoholic on age, gender, education and other factors. The brain densities are given in the table.
Pair 1 2 3 4 5 6 7 8 9 10 11
Alcoholic 40.1 38.5 36.9 41.4 40.6 42.3 37.2 38.6 38.5 38.4 38.1
Control 41.3 40.2 37.4 46.1 43.9 41.9 39.9 40.4 38.6 38.1 39.5
1 What is the appropriate test if we want to know if there is a significant difference in the means?
2 Perform the test, reporting a p-value.