| ci_bern | Confidence Interval for Proportion |
| ci_exp | Confidence Interval of Exponential Distribution |
| ci_general | Confidence Interval for Mean |
| ci_norm | Confidence Interval for Normal Distribution |
| ht_1pop_mean | Hypothesis Mean for Normal Distribution |
| ht_1pop_prop | Hypothesis Testing for Proportion |
| ht_1pop_var | Hypothesis Testing for Variance |