`stats.ttest_1samp()`, Ch.13 section 13.13, Ch.15 one-sample z-test for proportions, **Ch.14 section 14.3** - `proportions_ztest()`, Ch.14 section 14.8 one-tailed test, **Ch.13 section 13.8** one-way ANOVA, see *ANOVA* O'Neil, Cathy, Ch.26 further-reading open data, **Ch.27 section 27.5** Open Scien