When an irb is reviewing a research study and they are considering if a potential subject population is vulnerable, they should . are there adequate resources to conduct the study? b. is there a power differential between researchers and subjects? c. are the research procedures greater than minimal risk of harm? d. has the researcher completed required training?

(B)  Is there a power differential between researchers and subjects?

Explanation:

  IRB stand for the Institutional review board and the main responsibility of the IRB is that it basically protect the rights and the welfare of the human research activities under the given authorities.

IRB is also known as the constituted group that designed for the review purpose and also monitor various types of biomedical researches.

The IRB should consider all the potential subject and considered that the power differential between the subjects and the researches.  

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !

answer; collective security;