Arepresentative sample is one that accurately reflects a larger

Which of the following statements most accurately describes the requirement for the documentation of minors’ assent to participate in research? parents must approve written documentation.documentation is required unless waived by an irb.to protect minors documentation is always required.federal regulations do not require the documentation of minors’ assent.

Which powers best complete this graphic?

Music the height of a wave or the amount of the wave carries is the amplitude. a.air b.nodes c.speed d.energy