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In 2016, the Centers for Disease Control and Prevention reported that 36.5% of adults in the United States are obese. A county health service planning a new awareness campaign polls a random sample of 750 adults living there. In this sample 255 people were found to be obese based on their answers to a health questionaire.
a) What is the parameter? What is the statistics?
b) Do we have some evidence to suggest that the proportion of obesed adults in this county is different than 36.5%? Why?
c) Use the Four-Step-Procedure to perform a hypothesis test at alpha level of 0.10 to answer the question in part b).
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