A nationwide test taken by high school sophomores and juniors has three sections each scored...
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A nationwide test taken by high school sophomores and juniors has three sections each scored on a scale of 20 to 80 In a recent year the national mean score for the writing section was 50 3 with a standard deviation of 9 1 Based on this information complete the following statements about the distribution of the scores on the writing section for the recent year a According to Chebyshev s theorem at least 56 of the scores lie between and Round your answer to 1 decimal place b According to Chebyshev s theorem at least Choose one of the scores lie between 32 1 and 68 5 X
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