What is the null hypothesis and what is the alternative hypothesis? In this study what is the hearing aid type considered?

What are the treatments (analogy hearing aids, digital hearing aids, and cochlear implants) considered

Mason drew the cladogram shown. i give the brainliest which statements best describe the cladogram? check all that apply. reptiles are the most primitive. birds and reptiles are most closely related. frogs are more closely related to fish than birds. frogs are more closely related to birds than fish. fish are the most primitive.