vector of survival fractions corresponding to the doses
lower_bounds
vector of length 2 containing minimum allowed values of fitted alpha and beta, respectively
upper_bounds
vector of length 2 containing maximum allowed values of fitted alpha and beta, respectively
scale
parameter of the assumed error distribution of the data; see details
family
family of distributions of the error terms in the data; currently supported options are "normal" and "cauchy"
median_n
see details
trunc
should survival fractions be truncated downward to 1? Defaults to FALSE.
verbose
see details
Details
'verbose' outputs warnings that are otherwised suppressed when the function sanity-checks user inputs. 'median_n' denotes the number of distributions from family 'family' that are medianned. (Note that setting n = 1 (the default) is equivalent to using a simple normal or cauchy distribution without taking any medians.)