Several groups of american stockbrokers have been asked to predict the future of stock markets in japan. which statement is the most likely scenario in terms of their predictions?

they will be accurate in their predictions, which will equal their confidence in their predictions.
they will be more correct than confident in their predictions.
they will be more confident than correct in their predictions.
because of hindsight bias, they will underestimate their confidence.
they will be more confident than correct in their predictions.

Opinion polls reveal that many people believe that the military buildup of the 1980s came at the expense of pressing domestic problems such as environmental pollution and deteriorating educational and transportation infrastructure. in short, people are becoming aware of

Why are governments formed? what role does government play in society? what would life be like without government? what purpose of government would have the most dramatic effect on society if it were taken away? which purpose of government has the greatest effect on your daily life?

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.