
體育班三下第一次段考題庫2
Authored by 柏豪 蘇
Mathematics
9th - 12th Grade

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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
從上方放入一顆彈珠,假設彈珠每次滑落撞擊到釘柱時,會隨機地向右或向左落下,進而撞擊到下一層的釘柱,總共撞擊4次,最後落到下方編號0到4的格子中。已知彈珠每次撞擊後向右或向左落下的機率相等。求彈珠落到1號格子的機率?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
從上方放入一顆彈珠,假設彈珠每次滑落撞擊到釘柱時,會隨機地向右或向左落下,進而撞擊到下一層的釘柱,總共撞擊4次,最後落到下方編號0到4的格子中。試問彈珠落到幾號格子的機率最大?
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3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
重複擲一粒公正骰子180次,觀察所出現的點數,求6點出現次數的期望值?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
重複擲一粒公正骰子180次,觀察所出現的點數,求6點出現次數的標準差?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
重複丟一枚均勻硬幣36次,觀察出現正面或反面的情形,求正面出現次數的期望值?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
重複丟一枚均勻硬幣36次,觀察出現正面或反面的情形,求正面出現次數的標準差?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
重複「同時丟兩枚均勻硬幣」300次,觀察出現正面或反面的情形,並令隨機變數X表示兩枚硬幣都出現正面的次數,求X的期望值?
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