Anormal distribution has mean = 56.3 cm, and84% of the data fall above 50.2 cm. find the standarddeviation.

99.7 percent

Step-by-step explanation:

For a data set with a symmetric distribution , approximately 68.3 percent of the values will fall within one standard deviation from the mean, approximately 95.4 percent will fall within 2 standard deviations from the mean, and approximately 99.7 percent will fall within 3 standard deviations from the mean.

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step-by-step explanation:

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answer:

your answer is: c. 196 7/8 in^3.