nboot: numeric value specifying
number of samples alpha: numeric value
specifying complement of confidence interval
seed: vector of integers specifying seed
for pseudo-random number generator used
compare: vector of character strings
naming groups compared rng: character
string naming type of random number generator
sample: what is this? stat:
matrix of estimates mf-classMFBoot Other mf: mf-class,
mfbootcluster-class,
mfhlboot-class