A psychologist conducted an experiment concerning maze test scores of a strain of laboratory mice trained under different laboratory conditions. A group of 24 mice was randomly divided into three...

A psychologist conducted an experiment concerning maze test scores of a strain of laboratory mice trained under different laboratory conditions. A group of 24 mice was randomly divided into three groups of 8 each. Members of the first group were given a type of cognitive training, those in the second group were given a type of behavioral training, and those in the third group were not trained at all. The maze test scores (judged by someone who did not know which training particular mice received) were summarized as follows:

Is this sufficient evidence to conclude that the different types of training have an effect on maze test scores? Use the 5 percent level of significance.