Males 22-23 Cholesterol Cholesterol Difference 233 Total difference: -4 Mean difference: -0.2857 Females 22- Cholesterol Cholesterol Difference 23 (Screening Visit) | (Follow Up Visit) _ Total difference: -228 Mean Difference: -22.8 Null hypothesis: there is no significant difference in the mean difference of cholesterol levels at screening and follow up visit in males vs females M1 = M2 Alternative hypothesis: there is a significant difference in the mean difference of cholesterol levels at screening and follow up visit in males vs females M1 - M2 # 0 Calculate the mean, SD, degrees of freedom, critical t-value, calculated t-value, p-value State whether we can or cannot reject the null hypothesis