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

---

Definitions:

IFRS 9

International Financial Reporting Standard 9, relating to financial instruments, covering their classification, measurement, impairment, and hedging.

Performance Obligation

A promise in a contract to transfer a good or service to a customer, which is a fundamental concept in revenue recognition.

Non-distinct

Describes goods, services, or attributes that are not clearly separate or distinguishable from each other.