A First Course in Statistics, 12th Edition

Chapter Notes

Key Terms

Note: Starred (*) terms are from the optional sections in this chapter.

• Alternative (research) hypothesis308

• *Chi-square $({\chi }^2)$ distribution346

• *Distribution free test352

• Conclusion311

• Hypothesis313

• Level of significance312

• Lower-tailed test313

• *Nonparametrics352

• Null hypothesis308

• Observed significance level (p-value)319

• One-tailed (one-sided) statistical test313

• Rejection region309

• *Sign test352

• Test of hypothesis307

• Test statistic308

• Two-tailed (two-sided) hypothesis313

• Two-tailed test313

• Type I error309

• Type II error310

• Upper-tailed test313

Key Symbols

$\mu$	Population mean
p	Population proportion, P(Success), in binomial trial
${\sigma }^2$	Population variance
$\bar{x}$	Sample mean (estimator of $\mu$)
$\widehat{p}$	Sample proportion ...