Maaria Z.

asked • 03/13/13

how do i find the number of elements in this set??

I have this question regarding set theory and probability that i am struggling on:

Q: A group of international students take part in a survey on the nationality of their parents.
E= English Parent
F= French parent

n(ξ) = 50,  n(E) = 15,  n(F )= 9,  n(E U F)' = 33

     (1) Find  n(E ∩ F)                          

     (2) Find n(E' U F)

     (3) A student is chosen at random. Find the probability that this student has an        English parent and a French parent.

    (4) A student who has a French parent is chosen at random. Find the probability that this student also has an English parent.

 

Thankyou so much for any help ! 

2 Answers By Expert Tutors

By:

SURENDRA K. answered • 07/13/14

An experienced,patient & hardworking tutor

Luke B. answered • 03/13/13

fun + learning = inevitable progress

Maaria Z.

Thankyou so much. 

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03/13/13

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