An Important Assumption That Is Made When Using Parametric Methods

Multiple Choice

An important assumption that is made when using parametric methods to estimate percentiles and their confidence intervals in determining reference limits is that:

A) the type of distribution that the reference values exhibit is a t-distribution.
B) the true distribution that the reference values exhibit is Gaussian.
C) the distribution parameters cannot be estimated.
D) there is no set distribution pattern of reference values.