Since there are no problematic autocorrelations and trends in either phase, I am going to use the T-test to test for significance. The variances are not equal between phases because p is not greater than 0.05, and is 0.0206, tells us we need to use the Welch test, which assumes unequal variances. The p value is 0.06572 < 0.05 which means we can reject the null hypothesis that there is no difference between the baseline and intervention