2nd Edition

ISBN: 9780077836351

Author: Author

Publisher: McGraw Hill

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In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Textbook Question

Chapter 1.3, Problem 25E

Eat your vegetables: In an observational study, people who ate four or more servings of fresh fruits and vegetables each day were less likely to develop colon cancer than people who ate little fruit or vegetables. True or false:

The results of the study show that eating more fruits and vegetables reduces your risk of contracting colon cancer.
The results of the study may be due to confounding, since the lifestyles of people who eat large amounts of fruits and vegetables may differ in many ways from those of people who do not.

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Chapter 1.3, Problem 24E

Chapter 1.3, Problem 26E

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Solution Summary: The author evaluates whether the result of study that eating four or more fruits and vegetables reduces risk of cancer is true or false.

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