A veterinarian was studying suspected causes of enteroliths (concrete-like balls in the colons of horses). She suspected that a diet of mostly alfalfa could be a cause. In a study conducted at a veterinary research facility, she examined the records of 62 horses with enteroliths (cases) and compared them with the records of 75 horses free of enteroliths (controls). She found that 42 case horses were fed mostly alfalfa, compared with 17 control horses. The point estimates ofp

case

pcaseandp

control

pcontrol, wherep

case

pcaseis the proportion of horses with enteroliths that were fed mostly alfalfa andp

control

pcontrolis the proportion of control horses that were mostly fed alfalfa, are: