Question

In words, explain what it means to pick one person from the study who is “Japanese American OR smokes$21to30$ cigarettes per day.” Also, find the probability.

Short answer

The probability of one person from the study who is “Japanese American OR smokes $21to30$ cigarettes per day.” is$0.365$

Step-by-step solution

Content Introduction

The contingency table shown below is

Content Explanation

To select one person who is “Japanese American OR smokes $21to30$cigarettes per day.” means that the one criteria should be met.

$$\begin{gathered} P(JapaneseAmericanORsmokescigarettesperday)=P(JapaneseAmerican)+P(smokes21to30cigarettes)-P(JapaneseAmericanANDsmokescigarettesperday \\ P(JapaneseAmericanORsmokescigarettesperday)=\frac{26078}{100450}+\frac{15273}{100450}-\frac{4715}{100450} \\ P(JapaneseAmericanORsmokescigarettesperday)=\frac{36636}{100450} \\ P(JapaneseAmericanORsmokescigarettesperday)=0.365 \end{gathered}$$