Part 1 - Paired sample t-test - Consider the following study. Four individuals with high levels of cholesterol went on a special diet, avoiding high-cholesterol foods and taking special supplements. Their total cholesterol levels before and after the diet is found below. NOTE: ROUND TO THE NEAREST HUNDRETH PLACE

\fN-1 N-1 Start with sample variance: S Then variance of distribution of means: L Then standard deviation of distribution of means (SEM): M - H S- Then t-test (note: " is just 0)