A veterinarian does research on the causes of enteroliths, stones that develop in the colon of horses. She suspects that feeding alfalfa might be a cause. To investigate that suspicion, she selects five horses that are known to have enteroliths and compares the number of flakes of alfalfa they have eaten over a month with the number of flakes eaten by five horses free of enteroliths. Which hypotheses should the researcher test?

H₀: _E= _Hvs.H_a: _E< _H

H₀:vs.H_a:

H₀:vs.H_a:

H₀: _E= _Hvs.H_a: _E> _H

????