Question

Use the following table to answer the question.

X A B C D
P(X) 0.30 0.20 ? 0.28

Find P(B and D) assuming that B and D are independent.

Answer 1

well first of you need to work out the ?

p(x) is the probability
they add up to 1
so add up 0.3 + 0.2 + 0.28=0.78
1-0.78=0.22
C's probability is 0.22

i can not help any further sorry :/ i need to know this too lol

Answer 2

thank you for trying

Answer 3

I'll take it from here
:)

Answer 4

We need to find , we found P(C) as 0.22
P(B and D) ??
If B and D are independent, which means occurrence of B doesn't have any effect on the occurrence of C and viceversa
so
\[P(B\ and\ D)= P(B)\times P(D)\]
I think you can do now

Answer 5

would it be .056??

Answer 6

Yeah:) you're right

Answer 7

yeahhhh :)

Answer 8

how? lol

Answer 9

@amorfide If two events are independent then the probability of their simultaneous occurrence is equal to the product of their probabilities

Answer 10

nevermind i multiplied wrong numbers :$