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The mean score of an English test is 60, with a variance of 16. By using the Chebyshev's Theorem, find the minimum percentage (%) of

The mean score of an English test is 60, with a variance of 16. By using the Chebyshev's Theorem, find the minimum percentage (%) of students obtained scores of this English test between 53.2 and 66.8. Correct your final answer to 1 decimal place.

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