The rise in the price has ____ people’s reluctance to purchase this product.A. made

A.产品(Product)、促销(Promotion)、人员(Peopl、有形展示(PhysicalEvidenc

B.分销(Plac、产品(Product)、价格(Pric、过程(Process)

C.产品(Product)、价格(Pric、分销(Plac、促销(Promotion)

D.产品(Product)、价格(Pric、人员(Peopl、过程(Process)

A.Add sales discounts to sales.

B.Subtract the cost of goods sold from the sales pric

C.Subtract sales returns and sales discounts from sales.

D.Subtract accounts receivable from sales.

A.SELECTMAX(pric)FROMsh_goods;

B.SELECTcategory_idFROMsh_goodsGROUPBYcategory_id;

C.SELECTid,nameFROMsh_goods;

D.以上选项全部正确

A.A.

B.B.expect, anticipate

C.C.expected, anticipated

D.D.expect, participate

E.E.expected, participated

A.Ask the person whether he/she can tell you the pric

B.Say that you want buy one yourself and ask whether it is expensiv

C.Ask the price directly.

A.Management must be committed to a plan to sell the asset.

B.A buyer must have been located for the asset.

C.The asset must be marketed at a reasonable pric

D.The sale should be expected to take place within one year from the date of classification.

本题用到SMOKE.RAW中的数据。

其中， cig pric表示每包香烟的价格(美分) ， 而restaur n表示一个二值变量， 并在这个人所定居的州有餐馆抽烟限制时等于1。假定这些变量对个人而言都是外生的，那么你预期y5和y6具有什么样的符号？

(iii)在什么样的条件下第(i)部分的收入方程可识别？

(iv)用OLS估计收入方程并讨论岛的估计值。

(v)估计cigs的约简型。(记住这就要求将cigs对所有外生变量回归。) log(cig pric) 和restaur n在约简型中显著吗？

(vi)现在用2SLS估计收入方程。讨论β₁的估计值与OLS估计值的比较。

(vii)你认为香烟价格和餐馆抽烟限制在收入方程中是外生的吗？

使用SQL语句将表s中字段price的值大于30的记录删除，正确的命令是（）。

A.DELETE FROM S FOR price＞30

B.DELETE FROM sWHERE price＞30

C.DELETE S FOR pricC＞30

D.DELETE S WHERE pricC＞30

A.The government sets the quantity of televisions; firms respond to the quantity by charging a specific pric

B.The government sets the price of televisions; firms respond to the price by producing a specific level of output.

C.The market equilibrium price for televisions maximizes the total welfare of television buyers and sellers.

D.The market equilibrium price for televisions maximizes consumer welfare and minimizes producer profit.

A．If a firm charges less than the market price,it loses potential revenu

E．

B．If a firm charges more than the market price,it loses all its customers to other firms．

C．The firm can sell as many units of output as it wants to at the market pric

E．

D．All the choices are correct．