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Question
A random sample of 11 third-year medical school students took a comprehensive written exam as well as a comprehensive oral exam. The scores on both exams are given below. It is established that both test scores have highly nonnormal distributions.Student Written exam score Oral exam score
1 60 55
2 72 78
3 33 60
4 89 87
5 61 79
6 65 82
7 25 41
8 80 58
9 92 95
10 48 64
The medical examination board wants to know if the oral exam scores are higher than the written exam scores. State the appropriate null hypothesis for this problem.
A. H0: The probability distribution of written exam scores is identical to the probability distribution of oral exam scores.
B. H0:The probability distribution of written exam scores is shifted to the left of the probability distribution of oral exam scores.
C. H0:The probability distribution of written exam scores is shifted to the right of the probability distribution of oral exam scores.
D. H0:The probability distribution of written exam scores is shifted to the left or right of the probability distribution of oral exam scores.
Answer
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