Justine was interested in learning how to play the piano. She has successfully passed every level of music book and is planning her own concert. What stage of ability development is Justine at? a. Novice b. Apprentice c. Master d. Mentor.

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