Question

08.01)Sam wants to know how many families in his neighborhood plan to attend the neighborhood cookout. He puts all 100 of the neighborhood addresses in a hat and draws a random sample of 25 addresses. He then asks those families if they plan to attend the cookout. He finds that 15% of the families plan to attend the cookout. He claims that 15% of the neighborhood families would be expected to attend the cookout. Is this a valid inference?
Yes, this is a valid inference because he took a random sample of the neighborhood
Yes, this is a valid inference because the 25 families speak for the whole neighborhood
No, this is not a valid inference because he asked only 25 families
No, this is not a valid inference because he did not take a random sample of the neighborhood

I think yes because he took a random sample, and the found the percent and multiplied it by the total number of families

Answer 1

The answer is Yes, this is a valid inference because he took a random sample of the neighborhood. Hope it help!

Answer 2

Yes, this is a valid inference because he took a random sample of the neighborhood

Hope this helped!