52 A contractor estimates that a project has a 0.5 probability of $200,000 profit and 0.3 probability of $50,000 loss. The expected monetary value of this project is:A. $200,000B. $150,000C. $85,000D. $50,000E. None of the above

题目

52 A contractor estimates that a project has a 0.5 probability of $200,000 profit and 0.3 probability of $50,000 loss. The expected monetary value of this project is:

A. $200,000

B. $150,000

C. $85,000

D. $50,000

E. None of the above

相似考题

1.A contractor estimates that a project has a 0.5 probability of $200,000 profit and 0.3 probability of $50,000 loss. The expected monetary value of this project is:A ￥200,000B ￥150,000C ￥85,000D ￥50,000E None of the above.

2.已知P(A)=0.5，P(B)=0.6，P(A∪B)=0.8，可算得P(AB)=( )。A．0.2B．0.3C．0.4D．0.5

3.设 P（A）＝0.8，P（A－B）＝0.5，则P（AB）＝（ ）。 A. 0. 9 B. 0. 7 C. 0. 5 D. 0. 3

4.134 A contractor estimates that a project has a 0.5 probability of $200,000 profit and 0.3 probability of $50,000 loss. The expected monetary value of this project is:A. $200,000B. $150,000C. $85,000D. $50,000E. None of the above

参考答案和解析
正确答案：C
更多“52A contractor estimates that a project has a 0.5 probability of $200,000 profit and 0.3 p ”相关问题

  • 第1题：

    已知 P (A) =0.5，p (B) =0. 6, P (AlJB) =0.8，则 P (AB)=( )。

    A. 0. 2 B. 0. 3
    C. 0. 4 D. 0. 5


    答案：B
    解析：
    。P (AB) =P (A) +P (B) -P (AUB) =0. 5 + 0. 6 — 0. 8 = 0. 3。

  • 第2题：

    设P(B)=0.5,P(A-B)=0.3,则P(A+B)=_______.


    答案：1、0.8
    解析：
    因为P(A-B)=P(A)-P(AB)，所以P(A+B)=P(A-B)+P(B)=0.8.

  • 第3题：

    随机事件A,B独立，P（A)=0.3, P（B)=0.5, 则P（A|B)=

    A．0.3

    B．0.6

    C．0.2

    D．0.8


    D

  • 第4题：

    已知P(A) =0.5，P(B) =0.6，P(AUB) =0.8，P(AB) =( )。
    A. 0.2 B. 0.3 C. 0.4 D. 0.5


    答案：B
    解析：
    P(AUB) =P(A) +P(B) -P(AB)，则P(AB) =P(A) +P(B) -P(AUB) =0.5 + 0. 6- 0. 8 = 0. 3 。

  • 第5题：

    设P(A)=0.4，P(A+B)=0.7，若事件A与B互斥，则P(B)=______；若事件A与B独立，则P(B)=______。()

    A:0.3;0.5
    B:0.3;0.7
    C:0.4;0.5
    D:0.5;0.5

    答案：A
    解析：
    ①若事件A与B互斥，则P(A+B)=P(A)+P(B)，于是P(B)=P(A+B)-P(A)=0.7-0.4=0.3；②若事件A与B独立，则P(AB)=P(A)P(B)，于是由P(A+B)=P(A)+P(B)-P(AB)=P(A)+P(B)-P(A)P(B)，得P(B)=(0.7-0.4)/（1-0.4）=0.5。

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