
6月14日條件概率
Quiz
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
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8 questions
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1.
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1 min • 1 pt
從一副不含大小王的52張撲克牌中,每次從中隨機抽出1張撲克牌,抽出的牌不再放回,已知第1次抽到A牌,求第2次抽到A牌的概率。
2.
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1 min • 1 pt
袋子中有10個大小相同的小球,其中7個白球,3個黑球,每次從袋子中隨機摸出1個球,摸出的球不再放回,求:在第1次摸到白球的條件下,第2次摸到白球的概率。
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
袋子中有10個大小相同的小球,其中7個白球,3個黑球,每次從袋子中隨機摸出1個球,摸出的球不再放回,求:兩次都摸到白球的概率。
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
為了研究不同性別學生患色盲的比例,調查了某學校2000名學生,數據如圖表所示,從2000人中隨機選擇1人,問:已知選到的是男生,求他患色盲的概率。
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
為了研究不同性別學生患色盲的比例,調查了某學校2000名學生,數據如圖表所示,從2000人中隨機選擇1人,問:已知選到的學生患色盲,求他是男生的概率。
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
某人提出一個問題,甲先答,答對的概率為0.4,如果甲答錯,由乙答,答對的概率為0.5,則問題由乙答對的概率為
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
100件產品中有5件次品,不放回地抽取兩次,每次抽1件,已知第一次抽出的是次品,則第2次抽出正品的概率為?
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