Consider the first four (Arm Circumference, BMI) pairs in the NHANES III data given in Table 15.2, namely,
(a) How many different SRSs of size n = 2 can be selected from this subset of four BMI values? List each of these possible SRSs.
(b) Using a set size of k = 2 and arm circumference as the auxiliary variable for the ranking process, how many different RSSs of size n = 2 can be selected from this subset of four BMI values? List each of these possible RSSs.
