皮皮学，免费搜题
登录
搜题
【简答题】
某公司招聘员工，指定三门考试课程，有两种考试方案. 方案一：考试三门课程，至少有两门及格为考试通过； 方案二：在三门课程中，随机选取两门，这两及格为考试通过. 假设某应聘者对三门指定课程考试及格的概率分别是a，b，c，且三门课程考试是否及格相互之间没有影响，求： （Ⅰ）分别求该应聘者用方案一和方案二时考试通过的概率； （Ⅱ）试比较该应聘者在上述两种方案下考试通过的概率的大小。（说明理由）
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】He got up very late, _________ his school bag, and _________ to his school at once.
A.
taking; dashing
B.
took ; dashing
C.
taking ; dashed
D.
took ; dashed
【单选题】按照人体的器官功能系统阐述正常人体器官的形态结构、生理功能及其生长发育规律的科学称
A.
局部解剖学
B.
断层解剖学
C.
系统解剖学
D.
X线解剖学
E.
机能解剖学
【单选题】-- _________ --The school bag is mine.
A.
What is it?
B.
Is the school bag yours?
C.
Whose school bag is it?
D.
Is it a school bag?
【简答题】Sheila bought a new lunch bag for school. On the way to school, she looked inside. She hoped that a new lunch bag meant something new for lunch, 16 she found the same lunch as always---a sandwich. Whe...
【单选题】I can buy _______ and _______. . C. T-shirt; school bag
A.
a T-shirt; school bag
B.
a T-shirt; a school bag
C.
T-shirt; school bag
相关题目：
参考解析：
知识点：
题目纠错 0
发布
