Mathematics 1228A/B Lecture 15: Continued 2.2

• School: Western University
• Department: Mathematics
• Course: Mathematics 1228A/B
• Professor: Allen O'Hara

Document Summary

This looks like a chapter 1 question with the world probability added. A subset of {1,2,3,4,5,6,7} is chosen at random. Pr[e]=n(e)n(s) n(s)=number of subsets=27 n(e)=can t pick 1,3, 5, 7. Let s=the ways he can give out roses. Prob=#of ways he get 16 or more right. # of ways to answer the test (1816)=# of ways to pick which questions f get right. = # of ways to get 16 + # of ways to get 17 + # of ways to get 18. 18 questions each need an answer from 5 responses. # of ways to get at least 16. Ex1: eric has 5 identical roses to give to his 3 sweethearts, ann, nicole, jennifer. There are 18 multiple choice questions each with 5 responses only 1 of which is correct. If francine guesses on each question what is the (hh, ht, th) tt. Ex3: a fair 6 sided die is rolled once.