Which of the Following Statements Is Considered a Null Hypothesis

question 16

Multiple Choice

Which of the following statements is considered a null hypothesis?

• A) The children who watch more than 2 hours of TV have the same weight gain as children who watch TV less than 2 hours.
• B) Smoking is related to poorer health status.
• C) There is a greater amount of fatigue in health-care professionals in urban areas.
• D) Increases in activity are associated with decreases in cognition.

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Definitions:

Unit Cost

Unit cost is the total expense incurred to produce, store, and sell one unit of a product or service, including both fixed and variable costs.

Operating Profit

Income from business operations after operating expenses are subtracted from gross profits, but before taxes and interest expenses.

Operating Expense

ongoing costs for running a product, business, or system.

Operating Profit

The earnings of a business from its core operations, excluding the effects of interest and taxes.