Every year, the veterinary hospital at a major research university treats a number of horses that have stones called enteroliths in their guts. A sample of 20 years shows that on average about 2% of...

Extracted text: Every year, the veterinary hospital at a major research university treats a number of horses that have stones called enteroliths in their guts. A sample of 20 years shows that on average about 2% of horses presenting at the veterinary hospital are treated for enteroliths. Some breeds of horses seem more prone to developing enteroliths than others. Below is a table with the distribution of enteroliths among the breeds. Breed Fijian Thoroughbred Morgan Quarter horse Probability 0.4 0.2 0.3 The probability that a horse arriving at the veterinary hospital is not a Fijian,Thorougbred, or a Quarter horse is: