I need help with part (b) only, thank you.

27 bypass-patients are randomly divided into 3 treatment groups (dierent respiration). (a) Use the data about the values of folic acid in red blood cells after 24 hours in bypass patients given in the table and conduct the hypothesis test if there is no dierence in the average values of folic acid in red blood cells among these three groups using the signicance level of 5%.

(b) Find the sample means and the sample standard deviations for each group and interpret the result of the hypothesis test in part (a) using these means and standard deviations.