Suppose that there are two goods, 1 and 2, that Jane consumes. Demand functions for these two goods are given as follows: 1 ∗ = 1(g1) , g2 ,) 2 ∗ = 2(g1) , g2 ,) where g1 , g2 , refer prices of the goods and income, respectively. Explain and demonstrate (on the graph) the substitution and income effect for both an increase and decrease in price good 1. Use the notations given in the 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