條件機率2

條件機率2

11th Grade

8 Qs

quiz-placeholder

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條件機率2

條件機率2

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Hard

Created by

俊谷 葉

Used 6+ times

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

若 P(A|B) = P(B|A),

則下列何者正確?

P(AB)=P(AB)P\left(A\cap B\right)=P\left(A'\cap B\right)

P(A)=P(B)P\left(A\right)=P\left(B\right)

P(AB)=P(AB)P\left(A\cup B\right)=P\left(A\cap B\right)

P(AB)=0P\left(A\cap B\right)=0

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

P ( B|A ) + P ( B'|A ) =

0.5

1

1.5

2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 P(AB)=P\left(A\cup B\right)=  

 P(A)+P(B)P\left(A\right)+P\left(B\right)  

 P(A)P(B)P\left(A\right)-P\left(B\right)  

 P(A)P(B)+P(AB)P\left(A\right)-P\left(B\right)+P\left(A\cap B\right)  

 P(A)+P(B)P(AB)P\left(A\right)+P\left(B\right)-P\left(A\cap B\right)  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 10 支籤中有 3 支中獎籤,
甲抽1支後不放回,再換乙抽1支,
則甲、乙皆中獎的機率為何?

 310×310\frac{3}{10}\times\frac{3}{10}  

 310×210\frac{3}{10}\times\frac{2}{10}  

 310×29\frac{3}{10}\times\frac{2}{9}  

 310×2\frac{3}{10}\times2  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

某家庭有2個小孩,

今已知此家庭中至少有一個女孩,

則老大為男孩的機率為何?

12\frac{1}{2}

13\frac{1}{3}

14\frac{1}{4}

不一定

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

擲2顆骰子,已知點數和為6的條件下,

2顆骰子皆為偶數的機率為?

12\frac{1}{2}

13\frac{1}{3}

25\frac{2}{5}

27\frac{2}{7}

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 已知 P(A)=0.7P\left(A\right)=0.7  , P(B)=0.4P\left(B\right)=0.4  P(AB)=0.3P\left(A\cup B\right)=0.3 ,求 P(AB)=P\left(A\cap B\right)=  

0.6

0.7

0.8

0.9

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