# qnorm

## Type II Error in Two-Tailed Test of Population Mean with Known Variance

A tutorial on the type II error in two-tailed test on population mean with known variance.

## Type II Error in Upper Tail Test of Population Mean with Known Variance

A tutorial on the type II error in upper tail test on population mean with known variance.

## Type II Error in Lower Tail Test of Population Mean with Known Variance

A tutorial on the type II error in lower tail test on population mean with known variance.

## Two-Tailed Test of Population Proportion

A tutorial on two-tailed test on hypothesis of population proportion.

## Upper Tail Test of Population Proportion

A tutorial on upper tail test on hypothesis of population proportion.

## Lower Tail Test of Population Proportion

A tutorial on lower tail test on hypothesis of population proportion

## Two-Tailed Test of Population Mean with Known Variance

A tutorial on two-tailed test on hypothesis of population mean with known variance.

## Upper Tail Test of Population Mean with Known Variance

A tutorial on upper tail test on hypothesis of population mean with known variance.

## Lower Tail Test of Population Mean with Known Variance

A tutorial on lower tail test on hypothesis of population mean with known variance.

## Sampling Size of Population Proportion

A tutorial on computing the sampling size for the desired margin of error of population proportion estimate at given confidence level.