已选分类
管理学工商管理
单选题如果是左侧检验，P值是当原假设成立时，样本可能的结果( )实际观测结果的概率。 A．不高于 B．不低于 C．等于 D．不等于
单选题Inacertainclassconsistingof36students,someboysandsomegirls,exactlyoftheboysandexactlyofthegirlswalktoschool.Whatisthegreatestpossiblenumberofstudentsinthisclasswhowalktoschool?
单选题已知某省1997年水果产量的环比发展速度为105/%，1998年为104/%，1999年和2000年均为102/%，又知2001年的产量与1996年定基相比，其定基增长速度为118/%，则2001年水果产量的环比发展速度为( )。 A．103.86/% B．105.94/% C．104.12/% D．109.2/%
单选题下列指标属于数量指标的是( )。 A．产品销售额 B．产品合格率 C．产品销售利润率 D．产品单位成本
单选题Inthefigureabove,whatisthelengthofPQtimesthelengthofRS?(1)ThelengthofPQis5.(2)ThelengthofORtimesthelengthofPRisequalto12.
单选题不同时间上指标数值能够相加的指标是( )。 A．时期指标 B．时点指标 C．平均数 D．相对数
单选题当时期数列分析的目的侧重于研究某现象在各时期发展水平的累计总和时，应采用( )计算平均发展速度。 A．算术平均法 B．调和平均法 C．方程式法 D．几何平均法
单选题
单选题Last Tuesday a trucker paid $155.76, including 10 percent state and federal taxes, for diesel fuel. What was the price per gallon for the fuel if the taxes are excluded? (1)The trucker paid $0.118 per gallon in state and federal taxes on the fuel last Tuesday. (2)The trucker purchased 120 gallons of the fuel last Tuesday.
单选题Acertainalloycontainsonlylead,copper,andtin.Howmanypoundsoftinarecontainedin56poundsofthealloy?(1)Byweightthealloyisleadandcopper.(2)Byweightthealloycontains6partsleadand5partscopper(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．
单选题在简单随机重复抽样情况下，若要求允许误差为原来的2/3，则样本容量( )倍。 A．扩大为原来的3 B．扩大为原来的2/3 C．扩大为原来的4/9 D．扩大为原来的2.25
单选题Naturally occurring chemicals cannot be newly patented once their structures have been published. Before a naturally occurring chemical compound can be used as a drug, however, it must be put through the same rigorous testing program as any synthetic compound, culminating in a published report detailing the chemical"s structure and observed effects.
If the statements above are true, which of the following must also be true on the basis of them?
单选题What is the probability that events A and B both occur? (1)The probability that event A occurs is 0.8. (2)The probability that event B occurs is 0.6.
单选题计划规定商品销售额较去年增长3/%，实际增长5/%，则商品销售额计划完成情况相对指标为( )。 A．166.67/% B．101.94/% C．60/% D．98.1/%
单选题In the United States in 1986, the average rate of violent crime in states with strict gun-control laws was 645 crimes per 100,000 persons—about 50 percent higher than the average rate in the eleven states where strict gun-control laws have never been passed. Thus one way to reduce violent crime is to repeal strict gun control laws.
Which of the following, if true, would most weaken the argument above?
单选题If M and N are positive integers that have remainders of 1 and 3, respectively, when divided by 6, which of the following could NOT be a possible value of M+N?
单选题Ben and Ann are among 7 contestants from which 4 semifinalists are to be selected. Of the different possible selections, how many contain neither Ben nor Ann?
单选题
单选题本年出生婴儿中，男性占52.1/%，女性占47.9/%，这是( )。 A．结构相对指标 B．比例相对指标 C．比较相对指标 D．强度相对指标
单选题A breakfast that consists of 1 ounce of corn puffs and 8 ounces of fruit X provides 257 calories. When 8 ounces of fruit Y is substituted for the 8 ounces of fruit X, the total number of calories is reduced to 185. If fruit X provides 1.8 times as many calories as fruit Y, how many calories does 8 ounces of fruit Y alone provide?