问题 单项选择题

假定对一个由股价的500次连续的日运动构成的样本来进行统计以寻找股价变化的规律,则下面关于这一方法的说法错误的是( )。

A.需要进行一个总数为500次的试验

B.股价的每次运动类似于一个单独的事件

C.互不相容样本空间是实际上发生的给定数值的股价变化的序列

D.这种通过观察发生频率的方法来寻找其内在的规律的方法被称为主观概率方法

答案

参考答案:D

解析: 主观概率方法是指根据常识、经验和其他相关因素来判断,理财规划师可能给出的一个概率;题中D项描述的是统计概率方法。

填空题



Most taxpayers have had enough income tax collected by their employers during the year. So they do not (36) any money. In fact, most Americans get some money back. Last year, the Internal Revenue Service returned at least some money to more than (37) Americans paying individual income tax.
The United States has what is called (38) . Tax rates increase as (39) increase. This year, people earning more than (40) are taxed at the highest rate.
Earnings above that amount are taxed at (41) . Earnings below that amount are taxed at lower rates.
Individuals who earn less than (42) pay no income tax. But they do pay (43) , Medicare and other taxes.
There are many different ways for people and businesses to reduce their (44) Most homeowners, for example, can reduce their taxes a little by reporting to the I.R.S. the interest they pay (45) . This is called a (46)
In 2004, personal income taxes provided the government with most of its money: (47) of the budget. Social security and other (48) taxes provided (49) . Other forms of income include (50) , money borrowed to (51) and special taxes on (52) .
But income from taxes did not provide enough to pay for government spending. The I.R.S. says the budget deficit for 2004 was about (53) dollars.
Preparing tax documents can be complex. The I.R.S. estimates that taxpayers need an average of about 13 hours to prepare tax documents. And that is just for the basic tax form. For business, the I.R.S. estimates an (54) needs more than 50 hours. This is why a lot of Americans pay (55) to complete their tax documents for them.

单项选择题