* do-file for Supplementary Exercise 6.95 of IPS7e
version 18 /* works also with versions 14-17, see below for version 13 and earlier */

import delimited "R:\Chapter 6\ex06_095.csv", clear
summarize radon, d
stem radon
qnorm radon
ztest radon=105, sd(9) level(95)

**************************************************************************
* Stata 13 (and earlier) code (see Exercise 6.13 for explanations)
cii 120000 104.13333 900, level(95)
ttesti 120000 104.133333 900 105