Question

Suppose that one person from the study is randomly selected. Find the probability that person smoked $11to20$ cigarettes per day

Short answer

the probability that randomly selected person smoked $11to20$ cigarettes per day is$0.35$

Step-by-step solution

Content Introduction

The contingency table is shown below:

Content Explanation

the probability that person smoked cigarettes per day is

$$\begin{gathered} P(personsmokedcigarettes11to20perday)=\frac{35065}{100450} \\ P(personsmokedcigarettes11to20perday)=0.35 \end{gathered}$$