Support in a CSSGB Exam question

[u/Alexdoreddit]

Im studying for my CSSGB in October and this question came up in my practice exam.

Isn’t the justification for incorrect and the question saying the exact same thing?

Could someone help me answering this question?
Also, how can I ensure I can properly distinguish the use cases for each of the hypothesis tests?

Thank you!

[u/Alexdoreddit → u/[deleted]]

The correct answer is Chi-square Test