[,seq_ttest_arguments-method
                        Method to retrieve the contents of a slot of an
                        object of the seq_ttest_arguments class.
[,seq_ttest_results-method
                        Method to retrieve the contents of a slot of an
                        object of the 'seq_ttest_results' class.
df_cancer               Test data to run the examples
df_income               Test data to run the examples
df_stress               Test data to run the examples
seq_ttest               Sequential Probability Ratio Test using
                        t-statistic
seq_ttest_results-class
                        An S4 class to represent the results of a
                        sequential t-test.
sprtt                   sprtt: help page.
