Problem 2 Normal Distributions A lake has one input stream with a flow rate of 4 m/min. The value of the concentration, C, was monitored. The concentration was found to be normally distributed, with a mean value, ** 10 grams/m and a standard deviation, a 2 grams/m Assume steady-state and a conservative pollutant. a. What is the mean "flow of pollutant", QC, into the lake in grams/min? Show calculations. b. Since the standard deviation of the concentration, C, is 2 grams/m', what is the standard deviation of the "flow of pollutant", QC, in grams/min? Show calculations.

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Time and time related variables in engineering

Time is the event progression starting from past to present and then, future statistically. The time-related variable is any particular value in relation to time to assess its changes on a specified (XY) plane.