3. A research study was conducted to compare two methods of teaching statistics in graduate school. One method, called the traditional method, presented the course without the use of statistical software. The other method, referred to as experimental method, taught the course and utilized statistical software extensively. The scores made on a common comprehensive final exam by the students in both classes are shown in the table below. Traditional 82 85 82 73 82 73 79 71 86 90 98 86 77 81 | Experimental | 78 | 83 | 96 89 | 83 | 68 | 84 | 83 | 76 83 89 90 | 85 | 77 At 5% significance level, determine whether there is a sufficient statistical evidence to indicate that the experimental method is more effective than the traditional method.