A clinical trial in Delhi compared the mean fasting blood glucose (FBG) levels of 35 newly diagnosed type 2 diabetic patients before and after a 12-week structured diet and exercise program. The baseline mean FBG was 156 mg/dL (SD = 18 mg/dL) and post-intervention mean FBG was 132 mg/dL (SD = 16 mg/dL). The researcher wants to determine if the reduction in FBG is statistically significant. Which statistical test is most appropriate?