For which of the following situations is the dependent groups t-test appropriate (if not appropriate, why?). Remember to consider all relevant assumptions for this t- test. 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. a. The IV is role (one group is self-managed patients, in the other the patients are managed by a nurse); the DV is functional ability of the patient 48 hours after surgery (interval/ratio measure). The IV is time since incarceration (1 months vs. 3 months vs. 6 months); the DV is body weight. The IV is menopausal state (pre vs. post, using different people); the DV is attitudes toward menopause (interval/ratio measure). The IV is nap therany for narcoleptics (before vs after treatment): the DV b. с. d.

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