What is the proportion of people who have texted while driving every day in the past 30 days and never wear helmets?
However, the discussion following this exercise makes it clear that the question was meant to be asking for the proportion of those who have texted while driving among those who never wear helmets.
Lab 6 Exercise 2 asks
However, the discussion following this exercise makes it clear that the question was meant to be asking for the proportion of those who have texted while driving among those who never wear helmets.