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【判断题】
俯视角度拍摄可以夸张跳跃动作的高度。A.
正确
B.
错误
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举一反三
【单选题】Treasury bills do not _________
A.
pay interest.
B.
have a maturity date.
C.
have a face amount.
D.
have an active secondary market.
【单选题】Which of the following is a characteristic of Treasury bills?
A.
They are coupon instruments
B.
They are short-term debt instruments issued by major corporations
C.
They are discount securities
D.
They have more risk than other money market securities
E.
All the options are characteristics of Treasury bills
【简答题】设总体 ,其中 未知, ,则 的矩估计量
【单选题】As some treasury bills do not actually pay interest, they are not attractive to investors.
A.
Right
B.
Wrong
C.
Doesn't say
【单选题】Which of the following statements are true of Treasury bills?
A.
The market for Treasury bills is extremely deep and liquid.
B.
Occasionally, investors find that earnings on T-bills do not compensate them for changes in purchasing power due to inflation.
C.
By volume, most Treasury bills are sold to individuals who submit noncompetitive bids.
D.
All of the above are true.
E.
Only (a) and (b) of the above are true.
【简答题】设总体 的分布函数为 ,其中未知参数 , 为来自总体 的样本,则 的矩估计量为( ), 的极大似然估计量为( )
【简答题】设总体 ,其中未知参数 , 是 的样本,则 的矩估计为 , 样本似然函数为 .
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