Niagara Falls is a great tourist ______ drawing millions of visitors every year.
A) attentionB) attractionC) appointmentD) arrangement
ing millions of visitors every year.
A) attention B) attraction
C) appointment D) arrangement
如下模型可用来研究竞选支出如何影响选举结果:
其中,voteA表示候选人A得到的选票百分数,expendA和expendB分
别表示候选人A和B的竞选支出,而prtystrA则是对A所在党派实力的一种度量(A所在党派在最近一次总统选举中获得的选票百分比)。
(i)如何解释β1?
(ii)用参数表述如下原假设:A的竞选支出提高1%被B的竞选支出提高1%所抵消。
(iii)利用VOTE1.RAW中的数据来估计上述模型,并以通常的方式报告结论。A的竞选支出会影响结果吗?B的支出呢?你能用这些结论来检验第(ii)部分中的假设吗?
(iv)估计一个模型,使之能直接给出检验第(ii)部分中假设所需用的:统计量。你有什么结论?(使用双侧备择假设。)
was against advertising because it persuades rather than informs.He was drawing excessively fine distinctions.Of course advertising seeks to persuade.If its message were confined merely to information-and that in itself would be difficult if not impossible to achieve,for even a detail such as the choice of the color of a shirt is subtly persuasive-advertising would be so boring that no one would pay any attention.But perhaps that is what the well-know television personality wants.
6.By the first sentence of the passage the author means that().
A.he is fairly familiar with the cost of advertising
B.everybody knows well that advertising is money consuming
C.advertising costs money like everything else
D.it is worthwhile to spend money on advertising
7.The phrase“live up to" in Line 3,Paragraph 2 can be replaced by().
A.survive
B.complement
C.agree with
D.carry on
8.In the passage,which of the following is NOT included in the advantages of advertising?()
A.Securing greater fame
B.Providing more jobs
C.Enhancing living standards
D.Reducing newspaper cost.
9.The author deems that the well-known TV personality is ().
A.very precise in passing his judgment on advertising
B.interested in nothing but the buyer‘s attention
C.correct in telling the difference between persuasion and information
D.obviously partial in his views on advertising
10.In the author‘s opinion.()
A.advertising can seldom bring material benefit to man by providing information
B.advertising informs people of new ideas rather than wins them over
C.there is nothing wrong with advertising in persuading the buyer
D.the buyer is not interested in getting information from an advertisement