Question: The probability that a river flow exceeds 2,000 cubic meters per second is 15%. The coefficient of variation of these flows is 20%. Assuming a

The probability that a river flow exceeds 2,000 cubic meters per second is 15%. The coefficient of variation of these flows is 20%. Assuming a normal distribution, calculate

a) the mean of the flow.

b) the standard deviation of the flow.

c) the probability that the flow will be between 1300 and 1900 m³/s.

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