This is one of the case studies from Chapter 1 of the textbook (pp. 3-4). You may load it from the URL linked above or the resampledata package.
library(resampledata)
library(tidyverse)
glimpse(Verizon)Rows: 1,687
Columns: 2
$ Time <dbl> 17.50, 2.40, 0.00, 0.65, 22.23, 1.20, 2.08, 4.97, 0.00, 27.65, 1…
$ Group <fct> ILEC, ILEC, ILEC, ILEC, ILEC, ILEC, ILEC, ILEC, ILEC, ILEC, ILEC…