According to the speech, how do you think IFK felt about the relationship between immigrants and the nation? ASAP

Why has there been an increase in the older population within our prisons?

Which situation is the best example of regulation in an economic system? a retail business just opened a new store in a community close to its original location. a small clothing shop slashed it prices to attract customers from a larger department store nearby. a farmers’ market has offered a special deal to customers from a nearby yoga school. a state agency has been created to monitor the production and distribution of sports drinks.

The authors of the paper "fudging the numbers: distributing chocolate influences student evaluations of an undergraduate course"† carried out a study to see if events unrelated to an undergraduate course could affect student evaluations. students enrolled in statistics courses taught by the same instructor participated in the study. all students attended the same lectures and one of six discussion sections that met once a week. at the end of the course, the researchers chose three of the discussion sections to be the "chocolate group." students in these three sections were offered chocolate prior to having them fill out course evaluations. students in the other three sections were not offered chocolate. the researchers concluded that "overall, students offered chocolate gave more positive evaluations than students not offered chocolate." indicate whether the study is an observational study or an experiment. give a brief explanation for your choice.