Textbook Notes (363,006)
Statistics (125)
STAB22H3 (122)
Ken Butler (11)
Chapter 17

# STAB22- Chapter 17, Butler, Summer 2012, Textbook Notes

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School
University of Toronto Scarborough
Department
Statistics
Course
STAB22H3
Professor
Ken Butler
Semester
Summer

Description
CHAPTER 17PROBABILITY MODELS WHERE ARE WE GOINGlearning about probability models in this chapterMAIN TEXT Recall qn Suppose a cereal manufacturer puts pics of famous atletes on cards in boxes of cereals for hope of incring sales Manufacturer announces that20 Crosby 30 Beckham 50 Williamsp446 SEARCHING FOR CROSBY 1 QN How many cereal boxes to open before we get Sidney Crosby pic 2 assumptionpics are randomly distributedprobabilities are correct ex20 of cards are Crosbyprobability of finding Crosby is 020 in this case trialopening each box and 1 only 2 possible outcomes exist failure or success ex you either get Crosbys pic success or you do not failure2 probability of success p is same ON EVERY TRIAL ex p020 3 trials are independent ex finding Crosby in first box doesnt change what will occur when you reach for next box 3 Crosby scenario is example of BERNOULLI TRIALS BERNOULLI TRIALS if 1 2 possible outcomes psuccess qfailurenote that it does not req 050p 050q2 Psuccess constant 3 trials indepother exstossing a coin 1 either get heads Success or get tails failure 2 Psuccess053 getting heads on one trial does not affect outcome you get on next trial
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