3 Half of the patients in Frieda's project received acupuncture to relieve pain. For patients in each group (acupuncture = ACU vs no acupuncture = NACU), she reviewed the data on patients' self-reported pain. She compared the two groups using a t test. She concluded that the acupuncture group reported significantly less pain (lower the number, the less pain the patient experienced). Which of the following results support her conclusion?

MACU = 7.3 (SACU = 1.5) and MNACU = 7.5 (SNACU = 0.6), t(44) = 3.14, p > .05.

MACU = 8.3 (SACU = 1.5) and MNACU = 7.5 (SNACU = 0.6), t(44) = 4.14, p < .05.

MACU = 6.3 (SACU = 1.5) and MNACU = 7.5 (SNACU = 0.6), t(44) = 5.14, p < .01.

MACU = 4.3 (SACU = 1.5) and MNACU = 7.5 (SNACU = 0.6), t(44) = 1.14, p > .01.

None of the above

4 Dr. Barney is Frieda's mentor. He points out that while it seems like the patients in the acupuncture group had less pain, it might be that they had smaller, less invasive tumors at diagnosis, which could mean that acupuncture had nothing to do with relieving pain, instead the patients had less pain because they had smaller tumors. How could Frieda use a t test to evaluate whether the acupuncture group had smaller tumors?

Use a paired samples t test to compare the ACU and NACU groups on change in tumor size after chemo

Use an independent groups t test to compare the ACU and NACU groups on change in tumor size after chemo

Use a paired samples t test to compare the ACU and NACU groups on tumor size at diagnosis

se an independent groups t test to compare the ACU and NACU groups on tumor size at diagnosis

Any of the above will work