Explanation Given info: In a Saint Index Survey, 54% of people include Wal-Mart. From 1000 adults, the random sample of 30 adults is taken by using sampling without replacement. Requirement: 5% guideline for cumbersome calculations : When the sample size is not more than 5% of the size of the original population and the calculations are cumbersome, then the sample selections can be treated as a sampling with independent selections even though sampling is done without replacement. Justification: Check whether the selection is independent or not: Here, the selections are made without replacement. Hence, the selections are not independent. Check whether the binomial probability formula be used or not: A sample of 30 adults is selected at random without replacement from 1,000 adults...

Essentials of Statistics, Books a la Carte Edition (5th Edition)

5th Edition

ISBN: 9780321926739

Author: Mario F. Triola

Publisher: PEARSON

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Chapter 5.3, Problem 3BSC

To determine

To check: Whether the subjects selected can be treated as independent.

To explain: Whether the probability for at least 18 people who include Wal-Mart can be calculated by using the binomial distribution formula.

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Chapter 5.3, Problem 2BSC

Chapter 5.3, Problem 4BSC

Chapter 5 Solutions

Essentials of Statistics, Books a la Carte Edition (5th Edition)

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To check: Whether the subjects selected can be treated as independent. To explain: Whether the probability for at least 18 people who include Wal-Mart can be calculated by using the binomial distribution formula.

Solution Summary: The author explains that the probability for at least 18 people who include Wal-Mart can be calculated by using the binomial distribution formula.