ci_1pop_bern            Confidence interval for a population proportion
ci_1pop_exp             Confidence interval for a population mean
                        (exponential distribution)
ci_1pop_general         Confidence interval for a population mean
                        (general case)
ci_1pop_norm            Confidence interval for the normal distribution
                        parameters
ci_2pop_bern            Confidence interval for the difference in two
                        population proportions
ci_2pop_norm            Confidence Interval for the normal distribution
                        parameters - 2 populations
ht_1pop_mean            Hypothesis testing for the mean (normal
                        distribution)
ht_1pop_prop            Hypothesis testing for the population
                        proportion
ht_1pop_var             Hypothesis testing for the population variance
ht_2pop_mean            Hypothesis testing mean for two populations
ht_2pop_prop            Hypothesis testing for two population
                        porportions
ht_2pop_var             F Test to compare two variances
