10.For which of the following situations is the dependent groups t-test appropriate (if not appropriate, why?)

a.The IV is presence or absence of conversation directed to comatose patients (same patients with and without conversation); the DV is the patients' intracranial pressure.

b.The IV is birth type (home vs hospital); the DV is perceived functional ability of the patient on a 20 point scale 48 hours after surgery.

c.The IV is time since incarceration for a single group of ex-cons (measured at 1 months and 6 months); the DV is body weight. -

d.The IV is menopausal state (pre vs during vs post) in the same women over time; the DV is attitudes toward menopause (measured in a survey score 1-20). -