Question

Suppose you have data that shows that 12% of athletes test positive for steroids. You also know that 11% of athletes test positive for steroids and actually use steroids. What is the probability that an athlete uses steroids, given that he tests positive?

Answer 1

(A).37, (B).43, (C).51, (D).67, (E).92

Answer 2

im not that good so if you dont pass dont blame me so i will tell you what i think or explain

Answer 3

which one

Answer 4

@Mr.Man420

Answer 5

@Mr.Man420 hello or i wont help

Answer 6

explain please

Answer 7

@Mr.Man420 !!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 8

@lala525 Your too dam fast (:

Answer 9

well what i see is that first i added then multiplie so what do you think like i said dont blame me cuz if you have trouble @Mr.Man420 you get a math book or something or ask someone else if the person does not know so........

Answer 10

I wouldn't blame you. At least your helping.

Answer 11

:/ yeah i guess i am

Answer 12

(: i really don't know where to begin tho.

Answer 13

huh?

Answer 14

Haha, do you know how to do the problem?

Answer 15

......no only explain

Answer 16

Ok well thank you much @lala525!!

Answer 17

is that in mean way or nice

Answer 18

It's in a nice way(: have a great day.

Answer 19

bye

Answer 20

Bye

Answer 21

this is conditional probability
\[P(A|B) = \frac{P(A and B)}{P(B)}\]
A is prob he uses steroids
B is prob he tests positive
A and B is prob he both uses and tests positive

Answer 22

I'm still kinda lost. Will i use that formula to come up with the answer?

Answer 23

@chineseboy15

Answer 24

Would you be able to help i saw you looking?

Answer 25

Let me try.

Answer 26

Ok.

Answer 27

hi

Answer 28

Sorry, I cannot understand this question.

Answer 29

Ok thank you @chineseboy15

Answer 30

@dumbcow?

Answer 31

or @lala525

Answer 32

O hello @lala525(:

Answer 33

hi

Answer 34

didint i already help

Answer 35

I don't think so(:

Answer 36

@Mr.Man420 my dude i dont know this

Answer 37

I think it is D

Answer 38

Ill take your word for it. How did you come up with D tho?

Answer 39

its all about taking it away from 100 percent,if I remember correctly
remember,i said I think

Answer 40

Yes sir.

Answer 41

sorry if u get it wrong man

Answer 42

Its all good. Thank you.