Controls (n=22) appears to have higher percent changes in bone density than Women who Breastfeed (n=47) on average - in other words the breastfeeding women have greater loss in bone density in general. The Controls' percent change in Bone Density appear to be less variable as well. Specifically, for controls, xbar (s) = 0.3 (1.3) %, and for breastfeeding, xbar (s)= -3.6 (2.5) %, mud = -2.3 % Neither group appears to have large departures from normality. Neither group appears to have any outliers. ASSUMPTIONS STATED AND CHECKED: * Normality within groups appears to be sufficiently met. Even if the individual values are not normal, our sample sizes are sufficient to relax the assumption - and the xbars should be approximately normal even if the x's are not when n=22 and 47 * SRS cannot be verified. If this is not a SRS we can only make inference back to population that the sample could have arisen from. * Independence of observations cannot be verified. We'd want, for example, the sample to be small compared to the population as well as no pairing or other association between observations. d) What is the relationship between the p-value (whether or not it