LOGNORMDIST function

Returns the cumulative lognormal distribution


 * Usage: LOGNORMDIST(x,mean,standard_dev)
 * X - the value at which to evaluate the function.
 * Mean - the mean of ln(x).
 * Standard_dev - the standard deviation of ln(x).
 * If any argument is non-numeric, LOGNORMDIST returns the #VALUE! error value.
 * If x ≤ 0 or if Standard_dev ≤ 0, LOGNORMDIST returns the #NUM! error value.