Question 8 1 pts Before polling New Jersey residents about their energy preservation efforts, the researcher divides them into groups based on where they live (urban vs. rural residents). Then, she randomly draws a sample of 50 respondents from each of these groups to create a representative sample of the entire state .The researcher is practicing which of the following sampling methods? 0 Simple random sampling 0 Systematic random sampling 0 Stratied random sampling 0 Cluster sampling 0 None of the above