A normal distribution has mean = 56.3 cm, and

84% of the data fall above 50.2 cm. Find the standard

deviation.

Very hard i think its 20.1

Answer: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.