Question 138196: One more question:I appreciate the assistance!
Prof. Green’s multiple-choice exam had 50 questions with the distribution of correct answers shown below. Research question: At α = .05, can you reject the hypothesis that Green’s exam answers came from a uniform population?
Correct Answer Frequency
A 8
B 8
C 9
D 11
E 14
Total 50
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Prof. Green’s multiple-choice exam had 50 questions with the distribution of correct answers shown below. Research question: At α = .05, can you reject the hypothesis that Green’s exam answers came from a uniform population?
Correct Answer Frequency.....Expected #
A............... 8..............10
B ...............8..............10
C ...............9..............10
D ..............11..............10
E ..............14..............10
Total 50
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Ho: all the proportions are equal
Ha: at least one of the proportions is not equal to the others
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I ran a Chi-Sq on the data with the following results:
Test statistic: Chi-Sq = 1.21136
p-value: 0.8762..
df=(2-1)(5-1) = 4
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Conclusion: Since p-value is greater than alpha, Fail to reject Ho
His answers follow a uniform distribution.
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Cheers,
Stan H.
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