Mathematic Students, I need your help

[dreams_of_eternal_hate]

I have my graduation exam in math tomorrow and I'm terribly stuck with one example. Maybe one of you can help me with this shit.
That's the example:
The probability that after taking a certain drug allergic reactions appear is 3%. How big is the probability that out of 100 persons who take that drug at most with 98 an allergical reaction appears?

Thx

EDIT: My try to solve it looked like this:
(100 ncr 98) * 0,03^98 * 0,97^0,02

 

[marfal66]

Incoming Leandro!

 

[dreams_of_eternal_hate]

 

[Bodomonkey]

The correct answer is: cake.

 

[Knarfi]

The correct answer is: cake.

The correct answer is always: Cake.

 

[marfal66]

 

[dreams_of_eternal_hate]

Btw, what about dividing by zero? This could solve the problem maybe...

 

[Bodomonkey]

Or multiplying by over 9000?:zombie:

 

[Knarfi]

or jsut skip that fucking question since its just that example. you dont need 100% ffs

 

[marfal66]

and cake will do it anyway..

 

[Knarfi]

 

[dreams_of_eternal_hate]

but such an example is prolly about 25%







;_;

 

[Knarfi]

wtf i had like 8 questions that were split up in 1a to 1f etc

 

[Deadly]

wtf i had like 8 questions that were split up in 1a to 1f etc

holy crap, i had like 16 pages of questions alone
ah, the good old days

 

[Knarfi]

holy crap, i had like 16 pages of questions alone
ah, the good old days

well considering one question takes about 1,5 page on avarage, i didnt have that much less

 

[Leandro]

I have my graduation exam in math tomorrow and I'm terribly stuck with one example. Maybe one of you can help me with this shit.
That's the example:
The probability that after taking a certain drug allergic reactions appear is 3%. How big is the probability that out of 100 persons who take that drug at most with 98 an allergical reaction appears?

Thx

EDIT: My try to solve it looked like this:
(100 ncr 98) * 0,03^98 * 0,97^2

That was almost correct.

It was supposed to be (100 ncr 98) * 0,03^98 * 0,97^0,02

http://en.wikipedia.org/wiki/Binomial_distribution

 

[dreams_of_eternal_hate]

^ummm sorry but what did I do differently?

 

[K_A]

^ummm sorry but what did I do differently?

Nothing, you got it right

 

[dreams_of_eternal_hate]

^Impossible...the solution would be 0 with it.

 

[Leandro]

^ummm sorry but what did I do differently?

Shit, I just copied and pasted. The correct one was supposed to be


(100 ncr 98) * 0,03^98 * 0,97^2