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to The flow in a river can be modeled as a log-normal distribution. From the data, it was estimated that, the probability that the flow exceeds 869 cfs is 50% and the probability that it exceeds 100 cfs is 90%. Let X denote the flow in cfs in the river. What is the standard deviation of log (to the base 10) of X? Please report your answer in 3 decimal places,

to The flow in a river can be modeled as a log-normal distribution. From the data, it was estimated that, the probability that the flow exceeds 869 cfs is 50% and the probability that it exceeds 100 cfs is 90%. Let X denote the flow in cfs in the river. What is the standard deviation of log (to the base 10) of X? Please report your answer in 3 decimal places,

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Xu The flow in a river can be modeled as a log-normal distribution. From the data, it was estimated that, the probability that the flow exceeds 869 cfs is 50% and the probability that it exceeds 100 cfs is 90%. Let X denote the flow in cfs in the river. What is the standard deviation of log (to the base 10) of X? Please report your answer in 3 decimal places.
Transcribed Image Text:Xu The flow in a river can be modeled as a log-normal distribution. From the data, it was estimated that, the probability that the flow exceeds 869 cfs is 50% and the probability that it exceeds 100 cfs is 90%. Let X denote the flow in cfs in the river. What is the standard deviation of log (to the base 10) of X? Please report your answer in 3 decimal places.
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