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} ; $\frac { 2 } { 5 }$

Question

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} ; $\frac { 2 } { 5 }$

Quizplus · Accepted Answer

The outcomes in A or B are {7,8,9,10,11,12,13}, making 7 outcomes out of 15 possible, so P(A or B) = $\frac{7}{15}$.

A Probability Experiment Is Conducted in Which the Sample Space 715\frac { 7 } { 15 }157​

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