The American Veterinary Medical Association conducted a survey of veterinary cli

Question

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. Typically, 70% of the veterinary clinics in the world do not treat large animals. You wish to test whether American veterinary clinics are more likely not to provide this service. The most appropriate hypotheses are:

H0: p = 0.65, Ha: p > 0.7.

H0: p = 0.7, Ha: p < 0.7.

H0: p = 0.7, Ha: p 0.75.

Explanation / Answer

let p=proportion that do not treat large animals (cows, horses, etc.).

here we wish to test whether American veterinary clinics are more likely not to provide this service.

it means weather p>0.7 i.e. it will he hour alternative hypothesis(Ha)

so right choice will be

H0: p = 0.7, Ha: p > 0.7.

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