Stress can be associated with either increased or decreased eating

In your study to determine the best method to teach current

events to freshmen college students at your college, what would constitute your population and sample, and how would your sample be chosen and why? After obtaining your results, if you find that the new method produced higher scores than the old method of instruction, how will you determine if this difference was a "real difference" or occurred by chance? What will be an ideal response?

A Type I error has occurred if we

a. reject a null hypothesis that is really false. b. retain a null hypothesis that is really false. c. retain a null hypothesis that is really true. d. reject a null hypothesis that is really true.