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    Probablity

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    Justice
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    Probablity

    Post by Justice on Mon Jun 14, 2010 4:52 pm

    ok so i have a really slow math teacher who goes so slow we didnt even Start Probability. Ok so explain this to me
    a) when do you use nCr and nPr (I think i know but i want to make sure)
    b) if i am flipping a coin what is the probability of me getting head exactly 6 of the 8 times (I think you use nCr p^(something)(1-p)^(something)
    c) if i am flipping a coin what is the probability of me getting heads at least 6 of the 8 times?
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    Re: Probablity

    Post by Ahmed on Mon Jun 14, 2010 5:04 pm

    LMAO! Lev all of your math teachers classes are going to fail tomorrow Hilarious ...my teacher did Probability 2 months ago. lol

    a)If the order doesn't matter, it is a Combination. If the order does matter it is a Permutation.

    Ill answer b and c later


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    Re: Probablity

    Post by Justice on Mon Jun 14, 2010 5:39 pm

    Thanks Ahmed. btw lads i got the regent tomrw so yea...


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    Re: Probablity

    Post by Ahmed on Mon Jun 14, 2010 6:23 pm

    Lev...don't talk British man...it's "guys" not "lads"

    Oh yeah, I am also taking the regents tomorrow Wink -Trigonometry and Algebra II here I come Very Happy

    Now

    For b) 8C6 (.5)^6 x (.5)^2

    For c) 8C6 (.5)^6 x (.5)^2 + 8C7 (.5)^7 x (.5)^1 + 8C8 (.5)^8 x (.5)^0


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    Re: Probablity

    Post by Justice on Mon Jun 14, 2010 6:40 pm

    Can you tell me the general formula mate?


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    Re: Probablity

    Post by Ahmed on Mon Jun 14, 2010 6:44 pm

    Sorry I'm not British. :S


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    Re: Probablity

    Post by Ahmed on Mon Jun 14, 2010 8:40 pm

    Hey Lev what room will you be in tomorrow? Come to 6E18...I invited the gang. Gangsta


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    Re: Probablity

    Post by Justice on Mon Jun 14, 2010 8:59 pm

    i am in 5E18


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    Re: Probablity

    Post by Ahmed on Mon Jun 14, 2010 9:02 pm

    Ok so just go up one floor. lol


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    Re: Probablity

    Post by Justice on Mon Jun 14, 2010 9:05 pm

    yep. and wow we have the only two people on this forum Smexy was just on Surprised


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    Re: Probablity

    Post by Ahmed on Mon Jun 14, 2010 9:07 pm

    Yeah...he was...he's reading the forum as a guest...he doesn't like to cause distractions with his smexiness yano Razz ?

    BTW do you have a soccer ball? PLEASE BRING IT!!!


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    Re: Probablity

    Post by Justice on Mon Jun 14, 2010 9:23 pm

    What is the Probability that we will play with a busted ball?


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    Re: Probablity

    Post by Ahmed on Mon Jun 14, 2010 9:24 pm

    0% because you have a good soccer ball Razz

    Fine...do you have a basketball? Or do you know where we could find a wall?


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    Re: Probablity

    Post by The Banker on Tue Jun 15, 2010 3:40 am

    what on Earth is this? O.O
    i did a whole year on probability and i neva came across any of this stuff Hilarious
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    Re: Probablity

    Post by Ahmed on Tue Jun 15, 2010 8:23 am

    You're still not at our level.


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    Re: Probablity

    Post by Ahmed on Tue Jun 15, 2010 1:00 pm

    I smoked my first regents Very Happy


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    Re: Probablity

    Post by The Banker on Tue Jun 15, 2010 1:00 pm

    Ahmed IV wrote:You're still not at our level.
    dude... i'm at a higher level Cool
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    Re: Probablity

    Post by Justice on Tue Jun 15, 2010 1:19 pm

    Don't lie to your self Marwa. Our school is pretty advanced . make other schools look like they are in the stone ages.


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    Re: Probablity

    Post by The Banker on Tue Jun 15, 2010 1:32 pm

    nah man... the further maths ppl took the stuff u was talkin about last year. I just dropped the subject coz i can't juggle 5 subjects slanty
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    Re: Probablity

    Post by Ahmed on Tue Jun 15, 2010 1:36 pm

    Our school is more advanced Marwa simply because its not a regular school like the one that you go to .

    How was the exam lev Razz

    The freaking radical simplification question got me good ...I stared at it for 20 minutes till my brain broke free from its freeze lol


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    Re: Probablity

    Post by Ahmed on Tue Jun 15, 2010 2:09 pm

    NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!

    I got half a question wrong Sad

    Lev you know the graph that we had to draw...it said write the equation of its ______ ...I didn't know that word Sad ...I thought it meant inverse.


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    Re: Probablity

    Post by Justice on Tue Jun 15, 2010 2:18 pm

    Easy it took me 90 minutes to do it. i saw mailman was grading the finals. btw u didnt even walk in to say Hi. all you did was wave your hand and u didnt say anything


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    Re: Probablity

    Post by Justice on Tue Jun 15, 2010 2:20 pm

    the one with the linear regression?


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    Re: Probablity

    Post by Ahmed on Tue Jun 15, 2010 2:21 pm

    I was waving my hand to you, you noob...she didn't look at me so I didn't have to say anything lol

    Also there was no linear regression you fool!

    I am talking about the oen wehre you had to draw the graph of y=(1/2)^x


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    Re: Probablity

    Post by The Banker on Tue Jun 15, 2010 2:22 pm

    i go to a language, business and enterprise sixth form college... it ain't a regular high skl either son Rolling Eyes

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