Chapter 4.1, Problem 29E

To determine

To explain a likely direction of the bias.

Explanation of Solution

An SRS of $880$ drivers was asked: "Recalling the last ten traffic lights you drove through, how many of them were red when you entered the intersection?” and of the $880$ respondents, $171$ admitted that at least one light had been red.

Thus, $\begin{array}{l}\frac{171}{880}=0.1943\\ =19.43\%\end{array}$

Thus, $19.43\%$ of the drivers that entered the survey only, which is very less amount of survey from the actual drivers that entered the question of the survey.