A group of 10 male and 8 female students is talking about going out for pizza. If 50% of the male students actually go and 25% of the female students actually go, find the
Probability that a random student who goes out for pizza is female.
A) $\frac { 1 } { 18 }$
B) $\frac { 1 } { 8 }$
C) $\frac { 4 } { 5 }$
D) $\frac { 2 } { 7 }$

Question

A group of 10 male and 8 female students is talking about going out for pizza. If 50% of the male students actually go and 25% of the female students actually go, find the
Probability that a random student who goes out for pizza is female. 
A) $\frac { 1 } { 18 }$
B) $\frac { 1 } { 8 }$
C) $\frac { 4 } { 5 }$
D) $\frac { 2 } { 7 }$

Quizplus · Accepted Answer

50% of the male students going means 5 males go, and 25% of the female students going means 2 females go. So, out of the 7 students who go (5 males + 2 females), the probability that a randomly selected student is female is $\frac{2}{7}$.

A Group of 10 Male and 8 Female Students Is 118\frac { 1 } { 18 }181​

A Group of 10 Male and 8 Female Students Is $\frac { 1 } { 18 }$