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statistics

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. A random sample of 30 students obtained the following marks in a class test : (20)
Test the hypothesis that their median score is more than 50.

58 55 25 32 26 85 44 80
33 72 10 42 15 46 64 39
38 30 36 65 72 46 54 36
89 94 25 74 66 29

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