A local health department surveys 40 dog owners who are at a dog park on a Saturday to determine the average number of veterinary visits per dog in the community. The result is an average of 2.6 visits per year. What is the most likely issue with concluding that the mean number of visits for all dogs in the community is 2.6?
The sample size is too small.
The sample is not representative, potentially leading to a biased estimate.
The question should not have been asked at a park.
The mean must be lower in the community.