A clinical trial was conducted to evaluate the efficacy of a new drug to increase HDL cholesterol (the "good" cholesterol). 80 patients were enrolled in the trial and randomized to receive either the new drug or a placebo. Subjects were instructed to take the assigned medication for 8 weeks at which time their HDL cholesterol was measured again. Descriptive statistics (mean \( \pm S D \) ), reported for the experimental group ( \( n=40 \) ) was \( 40.83 \pm 2.44 \mathrm{mg} / \mathrm{dl} \). Meanwhile, the results for the control group ( \( n=40 \) ) were: \( 41.6 \pm 2.32 \) \( \mathrm{mg} / \mathrm{dl} \). Is there a difference between the health outcomes in the two groups?
