A police department investigates the effects of a community policing program on crime. What would be...
A police department investigates the effects of a community policing program on crime. What would be a directional null hypothesis for the researchers at the police department?
A. After implementing the community policing program, crime rates will be lower.
B. After implementing the community policing program, there will be a difference in crime rates.
C. After implementing the community policing program, crime rates will not be lower.
D. After implementing the community policing program, there will not be a difference in crime rates.
Homework Answers
Correct option is C:
C. After implementing the community policing program, crime rates will not be lower.
(since a null hypothesis indicate a sign of equality also since it is a directional test, null should give a sense of direction as well)
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