A nationwide test taken by high school sophomores and junices 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 51.5, with a...

Extracted text: A nationwide test taken by high school sophomores and junices 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 51.5, with a standard deviation of 9.0. Based on thes information, complete the following statements about the distritbution of the scores on the writing section for the recent year. (a) According to Chebyshev's theorem, at least E(about 89) ofr the scores lie between and (Round your answer to 1 deomal place.) (b) According to Chebyshev's theorem, at least (Choose one) of the scores lie between 33.5 and 69.5,