A veterinarian does research on the causes of enteroliths st

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 = _H vs. H_a: _E > _H

H₀: _E = _H vs. H_a: _E < _H

Solution

1 and 2 are not valid hypothesis. (3) and (4) are valid, but (3) is correct becauseresearcher wants tocheck if flakes of alfalfa are higher for horse with enteroliths