A Consumer Magazine Wants to Figure Out Which of Two

question 98

Multiple Choice

A consumer magazine wants to figure out which of two major airlines lost a higher proportion of luggage on international flights. The magazine surveyed Standard Air (population 1) and Down Under airlines (population 2) . Standard Air lost 45 out of 600 bags. Down Under airlines lost 30 of 500 bags. Does Standard Air have a higher population proportion of lost bags on international flights? Which of the following is the correct competing hypotheses?

• A) H 0 : p = p 0 , H A : p ≠ p 0
• B) H 0 : p 1 - p 2 = 0, H A : p 1 - p 2 ≠ 0
• C) H 0 : p 1 - p 2 ≤ 0, H A : p 1 - p 2 > 0
• D) H 0 : p 1 - p 2 ≥ 0, H A : p 1 - p 2 < 0

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Definitions:

Minerals

Inorganic substances required by the body in small amounts for a variety of functions, including bone formation and enzyme activity.

Nutritional Substances

Elements found in food that are essential for the growth, development, and maintenance of the body; includes vitamins, minerals, proteins, fats, and carbohydrates.

Elements

The basic substances that constitute all matter, each with its own distinct properties, which cannot be broken down into simpler substances by chemical means.

Sodium

A chemical element (Na) that is essential for the body in small amounts but can lead to high blood pressure and other health issues when consumed in excess.