Paul paid $663 for a new freezer. he paid for the freezer with his credit card, which has an interest rate of 15.28% compounded monthly, and made monthly payments for five years until the freezer was paid off. he kept the freezer for seven years, and it used an average of $2.14 of electricity per week. paul made no other purchases or payments with his credit card until the freezer was paid off. between the interest and the electricity, which component of the lifetime cost of the freezer was greater, and how much greater was it? (round all dollar values to the nearest cent.)
a. the interest cost $106.60 more than the electricity.
b. the interest cost $173.24 more than the electricity.
c. the electricity cost $489.76 more than the interest.
d. the electricity cost $115.96 more than the interest.

Suppose the price of a complement to lcd televisions rises. what effect will this have on the market equilibrium for lcd tvs?

Henry crouch's law office has traditionally ordered ink refills 55 units at a time. the firm estimates that carrying cost is 35% of the $11 unit cost and that annual demand is about 240 units per year. the assumptions of the basic eoq model are thought to apply. for what value of ordering cost would its action be optimal? a) for what value of ordering cost would its action be optimal?

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.