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This question was created from STAT 200_Final_Exam_Spring_2019_OL1.pdf

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This question was created from STAT 200_Final_Exam_Spring_2019_OL1.pdf
https://www.coursehero.com/file/38748661/STAT-200-Final-Exam-Spring-2019-OL1pdf/

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10. A survey showed that 720 of the 1000 adult respondents believe in global warming .
( a) Construct a 90%’s confidence interval estimate of the proportion of adults believing in global
Warming . ( Round the lower bo
I bound and upper bound of the confidence interval to three decimal
places ; Include description of how confidence interval was constructed.
( 16 ; Describe the results of the survey In everyday language*
17 . In a study to assess the effectiveness of garlic for lowering cholesterol , 50 adults were treated with
garlic tablets . Cholesterol levels were measured before and after treatment . The changes in their LDL
cholesterol ( in meld[ ; have a mean of’& and a standard deviation of 4 .
( a) Construct a 95%’ interval Estimate of the mean change in LDL cholesterol after the garlic tablet*
treatment . ( Round the lower bound and upper bound of the confidence interval to two decimal places ;
Include description of how confidence interval was constructed .
( 6 ) Describe the results of the study in everyday language

 
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