Question

how to identify the population and sample?

Answer 1

in this example
a survey of 1000 U.S. adults found that 59% think buying a home is the best investment a family can make.
i)population is all U.S. adults
ii)sample is the 1000 U.S. adults chosen at random from the U.S. adult population

Answer 2

in this case, does the sample come from the population?