Sue wants to know how many families in her small neighborhood of 50 homes would volunteer to help at a neighborhood animal shelter. She put all the addresses in a bag and drew a random sample of 25 addresses. She then asked those families if they would volunteer to help at the shelter. She found that 18% of the families would volunteer to help at the shelter. She claims that 18% of the neighborhood families would be expected to help at the animal shelter. Is this a valid inference? (1 point)

Answer 1

This is not a valid inference. A sample of 25 addresses may not be representative of the entire population of 50 homes. To make a valid inference, Sue would need to conduct a larger and more representative survey of the neighborhood families.