Explain the differences between random and stratified sampling.

1a. Explain the differences between random and stratified sampling.

1b. Many people in minority groups, including African Americans, Hispanic Americans, Asian Americans, and Native Americans, do not invest. Another group with low investment activity includes those who stopped their education at the high school level. Share with us whether random or stratified sampling would be best in order to get them to invest in your company.

These answers should be substantive with academic references to validate your responses.