已选分类
管理学工商管理
单选题受人们主观认识影响较大的调查是( )。 A．抽样调查 B．重点调查 C．典型调查 D．统计报表制度
单选题Pam and Ed are in a line to purchase tickets. How many people are in the line? (1)There are 20 people behind Pare and 30 people in front of Ed. (2)There are 5 people between Pam and Ed. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
单选题Any person who drops out of high school will be unemployed unless he or she finds a low-paying job or has relatives with good business connections.
单选题When a group of children who have been watching television programs that include acts of violence is sent to play with a group of children who have been watching programs that do not include acts of violence, the children who have been watching violent programs commit a much greater number of violent acts in their play than do the children who have been watching nonviolent programs. Therefore, children at play can be prevented from committing violent acts by not being allowed to watch violence on television.
The argument in the passage assumes which one of the following?
单选题Which of the following CANNOT be zero? Ⅰ. The sum of 7 consecutive integers Ⅱ. The sum of 10 consecutive even integers Ⅲ. The product of 13 consecutive integers (A) Ⅱonly． (B) ⅠandⅡonly (C) ⅠandⅢonly (D) ⅡandⅢonly (E) Ⅰ, Ⅱ, andⅢ
单选题Questionsrefertothefollowinggraph.1977～1978TEXTB()OKINVENTORYFORSCHOOLSXANDYBYYEAROFPURCHASE(asapercentofthe1977～1978inventory)Note：AllbookswerepurchasednewonJuly1ofeachyear.
单选题在一组数据中，每个数据类型出现的次数称为 A．参数 B．频数 C．众数 D．组数
单选题A thorough search of Edgar Allan Poe"s correspondence has turned up not a single letter in which be mentions his reputed morphine addiction. On the basis of this evidence it is safe to say that Poe"s reputation for having been a morphine addict is undeserved and that reports of his supposed addiction are untrue.
Which of the following is assumed by the argument above?
单选题If all of the telephone extensions in a certain company must be even numbers, and if each of the extensions uses all four of the digits 1, 2, 3, and 6，what is the greatest number of four—digit extensions that the company can have?
单选题A certain packing crate contains between 50 and 60 books. How many books are there in the packing crate? (1)If the books are counted out by three, there will be one book left over. (2)If the books are counted out by sixes, there will be one book left over.
单选题如果是右侧检验，计算出的P值为0.0501，若α=0.05，则( )。 A．接受H0:u=u0 B．接受H1:u＞u0 C．接受H1:u＜u0 D．推断理由不充分
单选题加权算术平均数指数要成为综合指数的变形，其权数为( )。 A．Q1P1 B．Q0P0 C．Q0P1 D．前三者均可
单选题What is the maximum capacity in cups of a pail that contains only sand and is filled to three fourths of its capacity?
(1)If one cup of sand were added to the pail, it would be filled to seven eighths of its capacity.
(2)If two cups were removed from the pail, it would be filled to one half of its capacity.
单选题在抽样调查中，要提高推断的可靠程度即提高概率度，必须( )。 A．缩小误差范围 B．确定总体指标所在的范围 C．扩大误差范围 D．扩大绝对可靠的范围
单选题下列有关抽样分布的说法，正确的是 A．抽样分布与总体分布相同 B．大样本的抽样分布服从正态分布 C．小样本的抽样分布不服从正态分布 D．小样本的抽样分布服从正态分布
单选题以等可能性为基础的概率是( )。 A．古典概率 B．统计概率 C．试验概率 D．主观概率
单选题Diana bought a stereo for $530, which was the retail price plus a 6 percent sales tax. How much money could she have saved if she had bought the stereo at the same retail price in a neighboring state where she would have paid a sales tax of 5 percent?
单选题直角三角形ABC的斜边AB=13厘米，直角边AC=5厘米，把AC对折到AB上去与斜边相重合，点C与点E重合，折痕为AD(如图)，则图中阴影部分的面积为()平方厘米.
单选题某市工业企业2007年生产经营成果年报呈报时间规定在2008年1月31日，则调查期限为( )。 A．一日 B．一个月 C．一年 D．一年零一个月
单选题AnairlinepassengerisplanningatripthatinvolvesthreeconnectingflightsthatleavefromAirportsA,B,andC,respectively.ThefirstflightleavesAirportAeveryhour，beginningat8:00a.m.,andarrivesatAirportBhourslater.ThesecondflightleavesAirportBevery20minutes,beginningat8:00a.m.,andarrivesatAirportChourslater.ThethirdflightleavesAirportCeveryhour,beginningat8.45a.m.Whatistheleasttotalamountoftimethepassengermustspendbetweenflightsifallflightskeeptotheirschedules?(A)25min(B)1hr5min(C)1hr15min(D)2hr20min(E)3hr40min