Jose and his 78-year-old grandfather are eating dinner. jose is amazed to see how much hot sauce his grandfather uses. when he asks about it, his grandfather says food doesn't taste as spicy as it used to. the reason is:

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