The table shows the demand and supply schedules for chocolate bars. if the price is $2.55 a chocolate bar, the quantity supplied the quantity demanded and of chocolate bars exists. a. equals; neither a shortage nor a surplus b. is greater than; a surplus c. is greater than; a shortage d. is less than; a shortage e. is less than; a surplus as the market moves to equilibrium, a. the price of a chocolate bar falls, the quantity demanded increases, and the quantity supplied decreases b. the price of a chocolate bar rises, the quantity demanded decreases, and the quantity supplied increases c. the price of a chocolate bar falls, and the quantity demand and quantity supplied both increase d. the price of a chocolate bar falls, the quantity demanded decreases, and the quantity supplied increases e. the price of a chocolate bar rises, and the quantity demand and quantity supplied both decrease price (dollars per chocolate bar) quantity demanded quantity supplied (bars per day) 1.50 600 330 1.85 525 390 2.20 450 450 2.55 375 510 2.90 300 570

Abenefit of using a debit or credit card instead of cash is that it provides a paper record of a purchase. looking at the purchases below, which one should be made using a credit or a debit card?

Which of the following actions is most likely to result in a decrease in the money supply? a. the discount rate on overnight loans is lowered. b. the government sells a new batch of treasury bonds. c. the federal reserve bank buys treasury bonds. d. the required reserve ratio for banks is decreased. 2b2t

Reliability and validity reliability and validity are two important considerations that must be made with any type of data collection. reliability refers to the ability to consistently produce a given result. in the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways. unfortunately, being consistent in measurement does not necessarily mean that you have measured something correctly. to illustrate this concept, consider a kitchen scale that would be used to measure the weight of cereal that you eat in the morning. if the scale is not properly calibrated, it may consistently under- or overestimate the amount of cereal that’s being measured. while the scale is highly reliable in producing consistent results (e.g., the same amount of cereal poured onto the scale produces the same reading each time), those results are incorrect. this is where validity comes into play. validity refers to the extent to which a given instrument or tool accurately measures what it’s supposed to measure. while any valid measure is by necessity reliable, the reverse is not necessarily true. researchers strive to use instruments that are both highly reliable and valid.