Chp 12.1 medical consultant -> commute on car vs. not car

[mine-cetinkaya-rundel]

Replace medical consultant data with car vs. not car, roughly n = 7, use emojis and recreate something like the figures in one mean chp building on existing figures on Chp 12.

[hardin47]

When we revise the question, pay attention to the rounding of p-hat. We accidentally calculated the wrong p-value area with the medical consultant because I rounded p-hat down instead of up. See issue #291 .

[hardin47]

also, while going through this example, pay attention to the words "parametric bootstrap"... probably change to "swap".

[hardin47]

If we revise the example in chapter 12, then in chapter 13 figure 13.1 (@fig-FourCaseStudies) needs to be updated.

[mine-cetinkaya-rundel]

I've given up on this.

[hardin47]

@mine-cetinkaya-rundel do you want to re-open and tag with v3? i'm fine either way, but we might want the issue to exist when we go back for another round?