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In an August 2012 Gallup survey of 1,012 randomly selected U.S. adults (age 18 and over),...

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Statistics

In an August 2012 Gallup survey of 1,012 randomly selected U.S.adults (age 18 and over), 536 said that they were dissatisfied withthe quality of education students receive in kindergarten throughgrade 12.

(a) Test, at 5% significance level, if this sample providesevidence that the proportion of Americans who are dissatisfied witheducation in kindergarten through grade 12 differs significantlyfrom 50%. (Be sure to state all the 5 steps involved in ahypothesis testing, Hypothesis, Observed statistic, p-value,decision and conclusion in contest of the problem) Hint: UseStatkey to get your p-value.

(b) Is the Test Significant? Why or Why not.

Answer & Explanation Solved by verified expert
3.8 Ratings (459 Votes)
Solution a For the given question we construct our null andalternative hypotheses asH0 p 050 vs Ha p 050 Since we ae to test if the proportion ofdissatisfied Americans is significantly different from 50 So itis a two tailed testHere p unknown population    See Answer
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