A large city installed LED streetlights, in part, to help reduce crime in particular areas. The city collected the number of property crimes along nine randomly selected streets in the month before and after the LED light installation, and claims that crime has been reduced. The crime data is shown in the table. 
a. Specify the competing hypotheses to test the city's claim.
B) Calculate the value of the relevant test statistic and find the critical value at the 5% significance level.
C) Does the evidence support the city's claim at the 5% significance level?
Definitions:
Antipsychotic Drugs
Medications primarily used to manage psychosis, including delusions, hallucinations, paranoia, or disordered thought.
Biomedical Therapy
Treatment that involves medication or other biological interventions to treat psychological disorders.
Psychological Disorders
A broad category of conditions that affect an individual's mental health, influencing their thinking, emotions, behavior, and functioning.
Electroconvulsive Therapy
A psychiatric treatment where seizures are electrically induced in patients to provide relief from mental disorders.
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