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5. Sixty percent of the consumers' population is reputed to prefer a particular brand A of toothpaste. a. If a group of consumers are selected at random and interviewed, what is the probability that exactly 5 people must be selected until interviewing the first consumer who prefers brand A? b. What is the expected number of consumers to be selected until the first one who prefers brand A is interviewed?

5. Sixty percent of the consumers' population is reputed to prefer a particular brand A of toothpaste. a. If a group of consumers are selected at random and interviewed, what is the probability that exactly 5 people must be selected until interviewing the first consumer who prefers brand A? b. What is the expected number of consumers to be selected until the first one who prefers brand A is interviewed?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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5. Sixty percent of the consumers' population is reputed to prefer a particular brand A of toothpaste. a. If a group of consumers are selected at random and interviewed, what is the probability that exactly 5 people must be selected until interviewing the first consumer who prefers brand A? b. What is the expected number of consumers to be selected until the first one who prefers brand A is interviewed?
Transcribed Image Text:5. Sixty percent of the consumers' population is reputed to prefer a particular brand A of toothpaste. a. If a group of consumers are selected at random and interviewed, what is the probability that exactly 5 people must be selected until interviewing the first consumer who prefers brand A? b. What is the expected number of consumers to be selected until the first one who prefers brand A is interviewed?
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