Question

Help Please!

Answer 1

Can anybody help me?

Answer 2

@ganeshie8 help please..

Answer 3

I really don't understand how to do the diagram tree..

Answer 4

I started the diagram tree but when I tried to find P(E1 ∩ F) I kept getting it wrong. I multiplied (3/12)(2/3) and then divided by 2/3+1/7+1/2

Answer 5

yes, you're partially correct!
the given numbers are already probabilities, so you need not divide by anything again

Answer 6

for part a),
just do below :

\(\large P(E_1\cap F) = \frac{3}{12}\times \frac{2}{3}\)
\(\large P(E_2\cap F) = \frac{7}{12}\times \frac{1}{7}\)
\(\large P(E_3\cap F) = \frac{2}{12}\times \frac{1}{2}\)

Answer 7

I see.. I kept dividing -.- for finding P(f) how would I do that?

Answer 8

For part C would the numbers change opposite

Answer 9

? @ganeshie8

Answer 10

for partb),
just add up the answers from part a)

Answer 11

\(\large P(F) = \frac{3}{12}\times \frac{2}{3}
+ \frac{7}{12}\times \frac{1}{7}
+ \frac{2}{12}\times \frac{1}{2}\)

Answer 12

part c is not dividing?

Answer 13

partc is about dividing !

Answer 14

sorry ^.^

Answer 15

use bayees theorem/formula :

\(\large P(E_1 | F) = \frac{P(E_1\cap F)}{P(F)}\)

Answer 16

Alright =) Thank You. I really appreciate the help c=

Answer 17

np.. u wlc :)