Data Analysis with R, Second Edition - Second Edition

A one-sample test of means

We finally have enough knowledge under our belts to perform a null-hypothesis significance test using the bootstrap. In fact, given what we already learned, it can scarcely be easier!

As a note, I prefer to use the the bootstrap mainly as a method of generating confidence intervals and illustrating uncertainty in population parameter estimates, and not as a tool for NHST. But, at least as a demonstration, we'll see a few examples of it being used for hypothesis testing here.

For ease of comparison, let's repeat the one sample test that we performed in Chapter 6, Testing Hypotheses. Recall, that the precip built-in dataset contained the precipitation (in inches) of a sample of US cities. We wanted to know if the ...