{"id":1030,"date":"2016-10-16T16:20:28","date_gmt":"2016-10-16T20:20:28","guid":{"rendered":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/?p=1030"},"modified":"2016-11-01T21:34:54","modified_gmt":"2016-11-02T01:34:54","slug":"math-9-lesson-5-fall-semester-2016-10162016","status":"publish","type":"post","link":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/2016\/10\/16\/math-9-lesson-5-fall-semester-2016-10162016\/","title":{"rendered":"Math 9, Lesson 5, Fall Semester 2016, 10\/16\/2016"},"content":{"rendered":"

[We have a substitute teacher as I am out of the country for two weeks (this Sunday and next Sunday). I will keep posting the teaching info as well as the homework here.]<\/p>\n

We start a new subject on probability. Students should have learned some basic concepts before about simple probability, the concept of a sample space with events consisting of some outcomes. In this chapter ,we study probabilities with multiple stages.<\/p>\n

When a random experiment involves two stages, we can use a rectangular grid, called a probability diagram, to represent the sample space to help us find probabilities.<\/p>\n

If a random experiment has two or more stages, we can use a tree diagram to represent the process, which should help us see all the possible outcomes and figure out the outcomes associated with a particular event.<\/p>\n

We then talk about mutually exclusive events. In a sample space, two events are mutually exclusive if they cannot occur at the same time. If A and B are two mutually exclusive events, the the probability of A or B occurring is: P(A or B) = P(A) + P(B).<\/p>\n

Homework:<\/p>\n

Print these pages: Page 1<\/a>, Page 2<\/a><\/p>\n

Workbook Page 11, #1 \u2013 #5, #21.<\/p>\n

Answers to last week’s homework<\/p>\n

Answers<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

[We have a substitute teacher as I am out of the country for two weeks (this Sunday and next Sunday). I will keep posting the teaching info as well as the homework here.] We start a new subject on probability. Students should have learned some basic concepts before about simple probability, the concept of a […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[18,4,3],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/1030"}],"collection":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/comments?post=1030"}],"version-history":[{"count":2,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/1030\/revisions"}],"predecessor-version":[{"id":1058,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/1030\/revisions\/1058"}],"wp:attachment":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/media?parent=1030"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/categories?post=1030"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/tags?post=1030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}