Suppose you produce t-shirts, and the equilibrium price for a t-shirt is $5. you haven't really done much research, so you decide to charge a price of $3 per shirt. at this price, there will be an of t-shirts. a. equilibriumb. excess supplyc. excess demand

The right answer is excess of supply. This happens when the price is lower than the equilibrium price. The simple logic is: If you sell something cheaper, then everyone will go and buy it. Usually you as a producer set a price lower because you cannot sell it so, following the logic previously explained, the best you can do is reduce its price so people come and buy it. Technically it is when the quantity willing supplied by the producers is higher than the quantity demanded by the consumers.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

explanation:

may i ask what challenges?