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Three experiments investigating the relation between need for cognitive closure and persuasion were performed. Part of...

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Basic Math

Three experiments investigating the relation between need forcognitive closure and persuasion were performed. Part of the studyinvolved administering a "need for closure scale" to a group ofstudents enrolled in an introductory psychology course. The "needfor closure scale" has scores ranging from 101 to 201. For the 84students in the highest quartile of the distribution, the meanscore was x = 178.30. Assume a population standarddeviation of ? = 7.47. These students were all classifiedas high on their need for closure. Assume that the 84 studentsrepresent a random sample of all students who are classified ashigh on their need for closure. Find a 95% confidence interval forthe population mean score ? on the "need for closurescale" for all students with a high need for closure. (Round youranswers to two decimal places.)

lowerlimit    
upperlimit    

Answer & Explanation Solved by verified expert
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Solution Given thatPoint estimate sample mean 17830Population standard    See Answer
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