Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: Being the standard deviation and the number of data, the standard error of the mean, Sm, of a data set is:
Options: <1> = . <2> = . <3> = . <4> = . <5> = .
Output:
5