Z is a normal good. The equilibrium price and equilibrium quantity of Z in the year 2011 was $25 and 60 units, respectively. In 2014, the equilibrium price of Z had decreased to $15 and the equilibrium quantity had also decreased to 50 units

Other things remaining the same, which of the following could explain this change?
A) Shift of the demand curve for Z to the left B) Shift of the demand curve for Z to the right
C) Shift of the supply curve of Z to the right D) Shift of the supply curve of Z to the left


A

Economics

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Your classmates from the University of Chicago are planning to go to Miami for spring break, and you are undecided about whether you should go with them. The round-trip airfares are $600, but you have a frequent-flyer coupon worth $500 that you could use to pay part of the airfare. All other costs for the vacation are exactly $900. The most you would be willing to pay for the trip is $1400. Your only alternative use for your frequent-flyer coupon is for your trip to Atlanta two weeks after the break to attend your sister's graduation, which your parents are forcing you to attend. The Chicago-Atlanta round-trip airfares are $450. If you do not use the frequent-flyer coupon to fly to Miami, should you go to Miami?

A. Yes, your benefit is equal to your cost. B. Yes, your benefit is more than your cost. C. No, your benefit is less than your cost. D. No, because there are no benefits in the trip.

Economics

The De Beers Company blocked competition

A) by controlling the supply of most of the world's high-quality bauxite, the mineral used to produce aluminum. B) in the diamond market by controlling the output of most of the world's diamond mines. C) in the market for fresh and frozen cranberries because it controls about 80 percent of the cranberry crop. D) because it has lower production costs than other department stores due to economies of scale.

Economics

The homoskedastic normal regression assumptions are all of the following with the exception of:

A) the errors are homoskedastic. B) the errors are normally distributed. C) there are no outliers. D) there are at least 10 observations.

Economics

Given that the firm wants to sell both the versions, how high can the high-end professional knives be priced?

a. $60 b. $70 c. $80 d. $100

Economics