PASWR (version 1.0)

Water: Sodium Content of Water

Description

An independent agency measures the sodium content in 20 samples from source X and in 10 samples from source Y and stores them in data frame Water. Data are used in Example 9.12.

Usage

Water

source

Ugarte, M. D., Militino, A. F., and Arnholt, A. T. (2008) Probability and Statistics with R. Chapman & Hall/CRC.

Examples

attach(Water)
t.test(X, Y, alternative="less")
detach(Water)