00:01
For question 2, to test whether the cardiovascular exercise or weight resistance training programs were more effective in reducing bmi, we will use a 2 -sample t -test.
00:20
And we will first test for equal variances using the f -test.
00:28
Now first, the assumptions of the f -test include the samples are independent and that the samples are normally distributed.
01:00
And the results of the f -test include an f -value of 1 .23 and a p -value of 0 .34.
01:16
Now since the p -value is greater than 0 .05, we fail to reject the null hypothesis.
01:35
Now the results of the 2 -sample t -test include a t -value of negative 2 .34 and a p -value of 0 .02.
01:51
And since the p -value is less than 0 .05, we reject the null hypothesis.
02:05
Moving on to question 3, to test whether variances of the change in bmi for the cardio and weight training group compared to the group that was not asked to follow a specific exercise program, we will use levene's test...