Question

A shampoo company recently paid a consulting firm to produce a study to determine if using their product resulted in cleaner hair than other brands. What is wrong with the study?
1)this is a self-interest study
2)the conclusion is based on a voluntary response sample
3)the relationship between two variables implies one causes the other
4)the study included loaded questions

Answers

GPT-4o mini
The correct answer is: **1) this is a self-interest study.**

The study is likely problematic because it is funded by the shampoo company that has a vested interest in the results. This can lead to bias in the study's design, execution, or reporting, which can undermine the credibility and objectivity of the findings.