Chemical masses that travel to the main stem of a river

Reference no: EM131076089

Nonpoint source loads are chemical masses that travel to the main stem of a river and its tributaries in flows that are distributed over relatively long stream reaches, in contrast to those that enter at well-defined and regulated points. The article "Assessing Uncertainty in Mass Balance Calculation of River Nonpoint Source Loads" (J. of Envir. Engr., 2008: 247-258) suggested that for a certain time period and location, X = nonpoint source load of total dissolved solids could be modeled with a lognormal distribution having mean value 10,281 kg/day/km and a coefficient of variation CV 5 .40 (CV = sXymX).

a. What are the mean value and standard deviation of ln(X)?
b. What is the probability that X is at most 15,000 kg/day/km?
c. What is the probability that X exceeds its mean value, and why is this probability not .5?
d. Is 17,000 the 95th percentile of the distribution?

Reference no: EM131076089

Questions Cloud

Percentile of the lognormal distribution : a. Use Equation (4.13) to write a formula for the median ,m of the lognormal distribution. What is the median for the load distribution of Exercise 79?

Provide sample statute citations and describe the statutes : Identify civil/administrative enforcement statutes. Provide sample statute citations and describe the statutes and available sanctions.

Problem regarding the forida now real estate : Tanya Pierce, President and owner of Florida Now Real Estate is seeking your assistance in designing a database for her business. One of her employees has experience in developing and implementing Access-based systems, but has no experience in con..

Create a single node that contains the inserted item : Note that insertion into an empty B-tree will create a single node that contains the inserted item.

Chemical masses that travel to the main stem of a river : Nonpoint source loads are chemical masses that travel to the main stem of a river and its tributaries in flows that are distributed over relatively long stream reaches, in contrast to those that enter at well-defined and regulated points.

Are you more likely to fall up or fall down : Please explain the difference between falling up and falling down in relation to criminal justice. Are you more likely to fall up or fall down? Why do you feel this way? ( minimum of 500 words).

Important to reduce one carbon footprint : Nowadays it is very important to reduce one's carbon "footprint" (how much carbon we produce in our daily lifestyles). Minimizing the use of fossil fuels and instead resorting to renewable sources of energy. What is the annual effective IRR of this i..

Demonstrate the use of linq : Design, implement, test, and debug a C# program to demonstrate the use of LINQ. This program may be a console application or a Windows Forms application. No matter whether you choose to develop a Windows Forms application or a console application..

Offshore wind turbine reliability based design : The article "On Assessing the Accuracy of Offshore Wind Turbine ReliabilityBased Design Loads from the Environmental Contour Method" (Intl. J. of Offshore and Polar Engr., 2005: 132-140) proposes the Weibull distribution with α = 1.817 and ß = .8..

User Account

All Pages