A researcher studies the effect of a patient understanding of providing preoperative teaching to patient using printed pamphlet and a video explaining the procedure and expected recovery trajectory, in addition to the usual procedure of the surgeon explaining the procedure and events of normal recovery.

A researcher studies the effect of a patient understanding of providing preoperative teaching to patient using printed pamphlet and a video explaining the procedure and expected recovery trajectory, in addition to the usual procedure of the surgeon explaining the procedure and events of normal recovery. Half of the subjects receive all three modes of teaching and the other half have received the normal explanation from the Surgeon. After the experiment is completed, it is found that there is statistically significant difference in understanding between the 2 groups. In terms of hypothesis testing what conclusion would the researcher make about the Null Hypothesis. 5. (Objetivo 5 Review boards y permisos)A researcher who is also a university professor is performing a multi-site study in which one-site interviews are conducted with nurses in 5 hospitals in a major city. Each hospital has an institutional review board IRB. From how many IRBs or committees must the researcher obtain permission to conduct the study? A. 6 – each of the 5 hospitals and the university B. Only 1 university C. 5 only hospitals D. None. educational research exempts from review