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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
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18. A researcher claims that more than 75%’ of the adults believe in global warming . Mimi conducted a
Survey on a random sample of 200 adults . The survey showed that 15 5 adults in the sample believe
in global warming . Assume Mini wants to use a 0.05 significance level to test the researcher’s claim .
What is the appropriate hypothesis test to use for this analysis ? Please identify and explain
why it is appropriate .
( b)
Identify the null hypothesis and the alternative hypothesis.
Determine the test statistic . Round Your answer to two decimal places . Describe method used
for obtaining the test statistic
( d)
Determine the p-value . Round your answer to three decimal places . Describe method used for
obtaining the D- value
( @ )
Compare p – value and significance level a What decision should be made regarding the full
hypothesi ( E.E. reject or fail to reject ) and why ?
" I
Is there sufficient evidence to support the researcher’s claim that more than 75%’ of the adults
believe in global warming ? Explain Your conclusion .

 
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