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Question Question A group of social scientists wanted to determine if police officers have a higher IQ than the general public. They created the following hypotheses: Ha: Police Officers are significantly more intelligent than the general public. Ho: Police officers are not significantly more intelligent than the general public.

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Question

A group of social scientists wanted to determine if police officers have a

higher IQ than the general public. They created the following hypotheses: 

Ha: Police Officers are significantly more intelligent than the general public.

Ho: Police officers are not significantly more intelligent than the general public. 

To test their hypotheses, they took a sample of 140 police officers and administered an IQ test. The mean score for officers was 112 with a standard deviation of 10. A second sample of 150 citizens from the general population yielded a average IQ score of 105 with a standard deviation of 15. What is the calculated value of t for this problem?

What conclusion is most appropriate given the data?

 
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