Mathematics, 20.05.2021 22:10 jaymoney0531

In the accompanying diagram, about 68% of the scores fall within the shaded area, which Is symmetric about the mean. The distribution is normal and the scores in the shaded area
range from 50 to 80. What is the standard deviation of the scores in the distribution?

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In the accompanying diagram, about 68% of the scores fall within the shaded area, which Is symmetri...