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

Regarding if the inference by Sam is valid, the answer is Yes, this is a valid inference because he took a random sample of the neighborhood.

Why is Sam's inference valid?

When a random sample of a population is taken and then an inference is derived from this sample, we can say that the inference is true for the whole population.

Sam found out that 15% of the families in his neighborhood plan to attend a cookout based on a random sample that he took. We can therefore say that this 15% applies to all the families and so is valid.

Find out more on random sampling at https://brainly.com/question/3139978.