In: Statistics and Probability
The American Veterinary Medical Association conducted a survey of veterinary clinics to estimate the proportion that do not treat large animals (cows, horses, etc.). The survey was mailed to a random sample of 120 veterinary clinics throughout the country and of these, 88 responded that they do not treat large animals. (a) (2 points) Calculate a 95% confidence interval for the population proportion p of veterinary clinics that do not treat large animals. (b) (5 points) Typically, 70% of the veterinary clinics in the world do not treat large animals. Use a hypothesis test to test whether American veterinary clinics are more likely not to provide this service. Use significance level α = 0.05.