Is the national crime rate really going down? Some sociologists say yes! They say that the reason for the decline in crime rates in the 1980s and 1990s is demographics. It seems that the population is aging, and older people commit fewer crimes. According to the FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34 yearst. Suppose you are a sociologist in Rock Springs, Wyoming, and a random sample of police files showed that of 36 arrests last month, 26 were of males aged 15 to 34 years. Use a 10% level of significance to test the claim that the population proportion of such arrests in Rock Springs is different from 70%.

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Is the national crime rate really going down? Some
sociologists say yes! They say that the reason for the decline
in crime rates in the 1980s and 1990s is demographics. It
seems that the population is aging, and older people commit
fewer crimes. According to the FBI and the Justice
Department, 70% of all arrests are of males aged 15 to 34
yearst. Suppose you are a sociologist in Rock Springs,
Wyoming, and a random sample of police files showed that of
36 arrests last month, 26 were of males aged 15 to 34 years.
Use a 10% level of significance to test the claim that the
population proportion of such arrests in Rock Springs is
different from 70%.
Transcribed Image Text:Is the national crime rate really going down? Some sociologists say yes! They say that the reason for the decline in crime rates in the 1980s and 1990s is demographics. It seems that the population is aging, and older people commit fewer crimes. According to the FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34 yearst. Suppose you are a sociologist in Rock Springs, Wyoming, and a random sample of police files showed that of 36 arrests last month, 26 were of males aged 15 to 34 years. Use a 10% level of significance to test the claim that the population proportion of such arrests in Rock Springs is different from 70%.
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