Chapter 17

# Chapter 17 - Chapter 17 Read Probability Models ActivStats 17 Chapter 17 A Bernoulli trial = a random experiment with two complementary events

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Chapter 17 Probability Models ActivStats: 17 Read: Chapter 17 A Bernoulli trial = a random experiment with two complementary events success (S) and failure (F). P( success ) = p P( failure ) = q = 1 - p Bernoulli trials = independent repetitions of a Bernoulli trial Examples: 1. Tossing a coin 20 times, success = Heads, p = 0.5, q = 0.5, n = 20 2. Rolling a die 10 times, success = six, p = 1/6, q = 5/6, n = 10 3. Taking multiple choice (choice A-E) exam unprepared, success = correct answer, p = 1/5, n is a number of questions 4. Products coming out of production line, success = defective item, p = proportion of defectives 5. Buying 10 boxes of cereal, success = box contains Tiger Woods picture, p = 0.20 (assume that there is 20% chance that a box of cereal contains the Tiger Woods picture), n = 10 6. Selecting a sample of 100 students and counting graduate students, success = graduate student, p = proportion of graduate students on a campus, n=100 NOTE: If we select a sample without replacement then trials

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## This note was uploaded on 07/25/2008 for the course STT 200 taught by Professor Dikong during the Summer '08 term at Michigan State University.

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Chapter 17 - Chapter 17 Read Probability Models ActivStats 17 Chapter 17 A Bernoulli trial = a random experiment with two complementary events

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