1.单选题- (共12题)
A.p1<p2<p3 | B.p2<p1<p3 |
C.p1<p3<p2 | D.p3<p1<p2 |
A.![]() | B.![]() | C.![]() | D.![]() |
A.若事件A与事件B是互斥事件,则P(A)+P(B)=1 |
B.若事件A与事件B满足条件:P(A)+P(B)=1,则事件A与事件B是对立事件 |
C.一个人打靶时连续射击两次,则事件“至少有一次中靶”与事件“至多有一次中靶”是对立事件 |
D.把红、橙、黄、绿4张纸牌随机分给甲、乙、丙、丁4人,每人分得1张,则事件“甲分得红牌”与事件“乙分得红牌”是互斥事件 |
①在学校明年召开的田径运动会上,学生张涛获得100米短跑冠军;
②在体育课上,体育老师随机抽取一名学生去拿体育器材,抽到李凯;
③从标有1,2,3,4的4张号签中任取一张,恰为1号签.
A.0 | B.1 | C.2 | D.3 |
2.选择题- (共1题)
Ron loved basketball. One afternoon on his way to a basketball game, he was walking and dreaming about playing college basketball the following year. As Ron was walking to the game, a car hit him so hard that he was thrown three feet into the air.
Ron woke up in a hospital room. When he learned that both his legs were broken, he realized his college basketball dreams were over. Ron did what the doctors told him, but his progress was slow. When he left the hospital, Ron was sent to a health center for physical treatment.
A week after he arrived there, he met Sunny. Sunny was a coach.His legs were hurt paralysed(瘫痪的) from a skiing accident. Even though he couldn't move his legs, Sunny coached of a basketball team called the Suns. Everybody on the team played from a wheelchair. Sunny invited Tony to join the game. Tony played badly, but for the first time since the accident, he stopped feeling sorry for himself.
After becoming a part of the Suns, Ron improved quickly. Basketball was like medicine for him. And whenever Ron became depressed or angry, Sunny was there to encourage and help him. The day before Ron left the center, he had dinner with Sunny. He asked Sunny how he managed to be generous and cheerful, even with his paralysis.
Sunny smiled and said, “It’s really quite easy. When you keep your face to the sun, the shadows(阴影) fall behind.”
3.填空题- (共3题)
4.解答题- (共5题)




(Ⅰ)用球的标号列出所有可能的摸出结果;
(Ⅱ)有人认为:两个箱子中的红球比白球多,所以中奖的概率大于不中奖的概率,你认为正确吗?请说明理由.


(1)求频率分布直方图中

(2)估计该企业的职工对该部门评分不低于80的概率;
(3)从评分在


(1)约定见车就乘;
(2)约定最多等一班车.
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【1】题量占比
单选题:(12道)
选择题:(1道)
填空题:(3道)
解答题:(5道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:0
7星难题:0
8星难题:0
9星难题:20