Chapter 12 - Data Analysis and Probability - 12-8 Probability of Compound Events - Practice and Problem-Solving Exercises - Page 781: 34

$\frac{1}{20}$

The first outcome affects the probability of the second so the events are dependent. P(You)=$\frac{1}{5}$ P(terry after You)=$\frac{1}{4}$ P(you then terry)=P(you) $\times$ P(Terry after You) P(you then terry)=$\frac{1}{5}$ $\times$ $\frac{1}{4}$ P(you then terry)=$\frac{1}{20}$