Imagine that you are trying to rewrite a survey. you find a multiple-choice question that asks, "what is your favorite recreational activity? " and gives three response options: watching television, shopping, or sports. you add a fourth response option, "other," and invite respondents to write an activity of their choice. what kind of question have you just made?

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