A reseаrcher recruited 75 femаle hоtel mаids fоr a study. She randоmly selected 41 and informed them (truthfully) that the work they do satisfies the Surgeon General's recommendation for an active lifestyle. The other 34 maids weren't told anything. The body mass (BM) of each maid was recorded at the start of the study and then again after four weeks. The researcher was interested in whether the change in BM was the same or different across the two groups. The change in BM for each participant in the study was calculated (BM1 - BM2). The boxplots below summarize the results. The mean change for the 41 maids in the Informed group will be compared to the mean change for the 34 maids in the Uninformed group. Which of the following statements about making an inference is correct? Perform a two-sample t-test of independent means. The boxplots shown above can't be meaningfully interpreted, because they don't account for the dependency between the means. Construct a confidence interval for the difference between dependent means.