Question

2 out of 10 people have an allergic reaction to a new medicine. What is the probability that exactly 4 out of 10 people given the medicine experience an allergic reaction?

Answer 1

I do not understand the kind of this question :/

Answer 2

neither do I :( Poop

Answer 3

Either, the probability is 0, or half of 2/10 i.e 1/10

Answer 4

Is the answer given there?

Answer 5

Nope.

Answer 6

I'm not sure if the question means "4 out of THOSE 10 people" or "4 out of any 10 people"

Answer 7

If its 4 out of THOSE 10 people, then 0.
If its 4 out of any 10 people, then 1/10

Answer 8

Are you honestly only twelve?

Answer 9

How do you know that? Stalking me eh?

Answer 10

I looked at your profile, hahah

Answer 11

lol looking at anyone's profile = stalking xD

Answer 12

You found this from StudyBlue?

Answer 13

WOAH, hahaha.
and found what from what?

Answer 14

This question.. where did you get it from?

Answer 15

A quiz, hhah.

Answer 16

And no answer choices? So inconsiderate people heh

Answer 17

You can not only be 12! I am a highschool student and I mean I am not being tutored by someone 5 years younger than me.

Answer 18

Lol all Indians are geeks ;D

Answer 19

And it's because of this site that I know all this stuff or I'd have been getting confused Pre-Algebra now

Answer 20

confused by^

Answer 21

On the real though you arent 12....
But anyways thank you for all your help, you seriously saved my "donkey" hahaha.

Answer 22

Oh it's question number 17

Answer 23

What?

Answer 24

Just write 1/10.. I'm sure that'd be correct here

Answer 25

Inverse relation, y'know

Answer 26

\[P(4)=\left(\begin{matrix}10 \\ 4\end{matrix}\right)(0.2)^{4}(1-0.2)^{10-4}=\frac{10!}{4!6!}(0.2)^{4}(0.8)^{6}\]This can be solved by the binomial distribution