下午1:20 4月20日周三 * 62% 9. The distribution of weights of female college cross-country runners is approximately normal with mean 122 pounds and standard deviation 8 pounds. Which of the following is closest to the percent of the runners who weigh between 114 pounds and 138 pounds? (A) 18% (B) 32% (C) 68% (D) 82% (E) 95%

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