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. an article suggests 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 10,827 kg/day/km and a coefficient of variation cv = 0.40 cv = σx μx .what are the mean value and standard deviation of ln(x)?