The following data on total body bone mineral content (TBBMC) (g) for a sample both during lactation (L) and in the post-weaning period (P). Subject 1 1928 2126 2 2549 2885 3 2825 2895 4 1924 1942 5 1628 1750 6 2175 2184 7 2114 2164 8 2621 2626 9 1843 2006 10 2541 2627 P
(a) Assuming that the normality assumption is satisfied, does the data suggest that true average total body bone mineral content during post-weaning exceeds that during lactation by more than 25g? State and test the appropriate hypotheses using a significance level of .05.
(b) Calculate an upper confidence bound using a 95% confidence level for the true average difference between TBBMC during post-weaning and during lactation.