if your username is katie6wpg plz stop deleting my stuff and if u have a prob with my answers tell me dont be all passive aggresive

Explain the diversity of race in latin america

What is the role of communication within groups of people with different backgrounds?

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a. static group comparisonb. pretest-posttest control group designc. control-group-time-series designd. nonrandomized control-group pretest-posttest design