it takes 10 minutes for anna to drive to work. if she cycles it takes 20 minutes and with public transport it takes at best 40 minutes, because she has to change buses twice. which mode of transport would you choose if you thought about both the environment, time and cost? list advantages and disadvantages

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