estimate
fun estimateSampleSizeViaStudentT(desiredHW: Double, initStdDevEst: Double, level: Double = 0.95): Long(source)
Estimate the sample size based on iterating the half-width equation based on the Student-T distribution: hw = t(1-alpha/2, n-1)*s/sqrt(n) <= desiredHW
Return
the estimated sample size
Parameters
desired
the desired half-width (must be bigger than 0)
init
an initial estimate of the standard deviation (must be bigger than or equal to 0)
level
the confidence level (must be between 0 and 1)