This script implements Abraham Wald's (147) *Sequential Probability Ratio Test* for the test of a normal mean (difference) with unknown variance in R.
The script implements the sequential *t* tests developed by Rushton (1950, 1952), commonly referred to as *Barnard's t test*, and Hajnal (1961). It contains R code to perform
- one- or two-sided *t* tests with
- one, two paired, or two independent samples.