According to the law of supply, if the price of cars decreases, what will happen to the quantity of cars supplied? choose the correct answer from the following choices, and then select the submit answer button. the quantity supplied will decrease. the quantity supplied will be unaffected by this event. the quantity supplied will increase. the quantity supplied will either rise or fall, depending on other factors. need on this question?

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