Dr. Carson studies the effect that knowledge about healthy food may have on the appearance of obesity. Therefore, 12 high school students were randomly assigned to two groups. One group of 7 students received training about healthy food, while there was no interference with the eating habits of the other group of 5. After 9 weeks, Dr. Carson measured the weight and height of each student in each group. The Body Mass Index, BMI, was calculated as weight/height2 (kg-m'z). BMI BMI without training with training 24.] 23.5 23.8 24.1 22.9 22.2 23.6 23.2 23.4 22.9 23.5 21.9 Sample mean 23.56 23.043 Sample variance 0.203 0.6 11) Dr. Carson wants to know whether or not these data support her thought about a possible training effect on mean BMI. Please help her answer this question statistically (CL = 0.05)