Please, check my answers and correct me if I'm wrong. Thank you!

Using the information provided, indicate which statistical test you think should be used for each of the following situations (a-d):

a.Independent variable: normal birth weight vs. low birth weight infants; dependent variable: breathing rate (in breaths per minute). T-test for independent samples

b.Independent variable: time of measurement of same patient (before and after surgery); dependent variable: heart rate. Repeated measures ANOVA

c.Independent variable: time of measurement (before, during, and after intervention); dependent variable: did vs did not exercise regularly. Cochran's Q test

d.Independent variable: infertility treatment A vs infertility treatment B vs control condition; dependent variable: did vs did not become pregnant. Chi square test