Denise ignored the reports to buy bottled water, canned food, plastic sheeting and duct tape after hearing that there was an increased threat of terrorism in the US, despite the fact that she had time and money to purchase these.

Dr. robbins wants to know if there are different opinions regarding the value of public school education between native americans who have at least one relative who attended indian boarding school and native americans who have no family experience with indian boarding school. dr. robbins contacts 35 native american participants in each group. he wants each group to include younger as well as older adults, and a mix of male and female participants. he asks each person to complete a survey about their attitudes toward public education. the design of this study is: