Wilcoxon T Test McNemar Test t-test for Independent Means t-test for Dependent Means
A rat study was conducted to find out whether environmental inputs could affect brain growth. A group of 16 laboratory rat twins was selected at birth and the rats were randomly assigned to one of two groups. The rats were thus paired off on the basis of genetic inputs, with one rat from each twin-pair assigned to the experimental group and the other twin in the control group. The experimental group was raised in a stimulating environment with toys, etc. These animals were also let out of their cages 30 minutes a day and allowed to explore. The other rats lived alone in dimly lit cages, were rarely handled and were not allowed out of the cages. All animals received the same diet. After 90 days, the animals were sacrificed and the weight of the cortex was obtained and recorded in milligrams. Cortical weight of the two groups was compared.
Choose the statistic you would use to test your hypothesis.
Wilcoxon T Test McNemar Test t-test for Independent Means t-test for Dependent Means
