Practice Quizlet

A. If all the observed counts are at least 5 then we have no concerns about the appropriateness of using a Chi-square test.

Group of answer choices

True

False

B. New Zealand Police commissioned the 2016-2017 Citizens' Satisfaction Survey. This survey measures key areas of interest including citizens' levels of trust and confidence in the New Zealand Police, perceptions of community safety and the Police's community involvement. The survey is structured to provide reporting at a national level, by each of the 12 Police districts, and also according to various policing services. The results are from a nationally representative sample of 9535, obtained from the electoral roll. Assume that one sample was taken which was then cross-classified byPolice districtandFeeling of safety.

One of the questions asked in the survey was:

"Thinking about your overall sense of freedom from crime, how safe or unsafe do you feel in your local neighbourhood after dark?"

A Chi-square test was conducted to see whether there was an association betweenPolice districtandFeeling of safety.

Whichoneof the following gives acorrectnull hypothesis for this Chi-square test?

1. The underlying distribution of Police district is not the same at all levels of Feeling of safety.
2. The variables Police district and Feeling of safety are dependent.
3. There is no link between Police district and Feeling of safety.
4. The variables Police district and Feeling of safety are related.