The distribution of iowa test vocabulary scores for seventh, Ask an Expert

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The distribution of Iowa Test vocabulary scores for seventh grade students in Gary, Indiana, is approximately Normal with mean ? = 6.84 and standard deviation ? = 1.55. The 68-95-99.7 Rule says the percent of scores between 5.29 and 8.39 is

A) 99.7%

B) 100%

C) 68%

D) 95%

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