A local veterinary clinic typically sees 15% of its horses presenting with West Nile virus. If 10 horses are admitted during July, what is the probability a randomly selected horse among the 10 new admits has West Nile virus?

Question

Quizplus · Accepted Answer

If 15% of the horses present with West Nile virus, then out of 10 horses randomly admitted, we can expect 10 x 15% = 1.5 to have West Nile virus. However, since we can't have half a horse with West Nile virus, we round to the nearest whole number and expect 1 horse with West Nile virus. Therefore, the probability of selecting a horse with West Nile virus from the 10 new admits is 1/10 or 0.15.

A Local Veterinary Clinic Typically Sees 15% of Its Horses