A Study Designed to Investigate an Increase in Traffic Accidents

question 7

Multiple Choice

A study designed to investigate an increase in traffic accidents at five major intersections finds that road signs near all of the intersections were changed during the month before the increase in accidents was observed. Which of the following experimental designs was used to obtain the findings?

• A) Ex post facto design
• B) Crossover design
• C) Longitudinal design
• D) Cross-sectional design

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Definitions:

Lower Limit

The minimum threshold or boundary for a variable or parameter within a given context, such as statistical control limits.

Cost-Based Pricing

A pricing method that determines the selling price of a product by adding a markup to its total cost.

Mark-Up Percentage

The percentage added to the cost price of goods to cover overhead and profit in the selling price.

Price Elasticity

A measure of how much the quantity demanded of a good responds to a change in the price of that good.