A Probability Experiment Is Conducted in Which the Sample Space $\frac { 7 } { 15 }$

Multiple Choice

A probability experiment is conducted in which the sample space of the experiment is S={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15} . Let event A={7,8,9,10} and event B={9,10,11,12,13} . Assume that each outcome is equally likely. List the outcomes in A or B. Find P(A or B) .

A) {7,8,9,10,11,12,13} ; $\frac { 7 } { 15 }$
B) {9,10} ; $\frac { 2 } { 15 }$
C) {7,8,9,10,11,11,12,13} ; $\frac { 3 } { 5 }$
D) {7,8,9,10,12,13} ; $\frac { 2 } { 5 }$