Results 1 to 3 of 3

Math Help - Poisson Distribution - on a standard calculator

  1. #1
    Junior Member
    Joined
    Jul 2009
    Posts
    49

    Poisson Distribution - on a standard calculator

    hello , can Poisson Distribution problems be worked out on a standard
    calculator ?
    here is a question ive been trying to solve

    If there are 150 typographical errors randomly distributed in a
    600-page manuscript, find the probability that any given page has exactly 2 errors.

    the solution (2.7183) - 0.25 * (0.25)2 / 2!
    the answer given is 0:024

    my problem is this part (2.7183) - 0.25
    can it be done on a standard calculator ?
    if so how?

    i apologize for being Old Fashioned
    but i like my standard calculator!



    Follow Math Help Forum on Facebook and Google+

  2. #2
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by jickjoker View Post
    hello , can Poisson Distribution problems be worked out on a standard
    calculator ?
    here is a question ive been trying to solve

    If there are 150 typographical errors randomly distributed in a
    600-page manuscript, find the probability that any given page has exactly 2 errors.


    the solution (2.7183) - 0.25 * (0.25)2 / 2!
    the answer given is 0:024


    my problem is this part (2.7183) - 0.25
    can it be done on a standard calculator ?
    if so how?

    i apologize for being Old Fashioned
    but i like my standard calculator!






    Every calculator (including yours) can do the basic opertions of addition, subtraction, multiplication and division. Without wanting to sound facetious, how you do it is that you press the correct buttons in the correct order. It will most likely include using appropriate brackets.

    Any problem doing this will be at the user interface, not the calculator. I suggest you ask someone in the flesh to help you if you can't do it.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member
    Joined
    Mar 2008
    Posts
    934
    Thanks
    33
    Awards
    1
    Quote Originally Posted by jickjoker View Post
    hello , can Poisson Distribution problems be worked out on a standard
    calculator ?
    here is a question ive been trying to solve

    If there are 150 typographical errors randomly distributed in a
    600-page manuscript, find the probability that any given page has exactly 2 errors.

    the solution (2.7183) - 0.25 * (0.25)2 / 2!
    the answer given is 0:024

    my problem is this part (2.7183) - 0.25
    can it be done on a standard calculator ?
    if so how?

    i apologize for being Old Fashioned
    but i like my standard calculator!


    The answer should be

    \displaystyle \frac{(0.25)^2}{2!} e^{-0.25}

    It's difficult to compute
    \displaystyle e^{-0.25}
    on a four-function calculator (if that's what you have). So for problems like this you probably want a calculator with an
    \displaystyle e^x
    key, or an
    \displaystyle x^y
    key.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: December 27th 2011, 02:08 PM
  2. Poisson distribution and asymptotic normal distribution.
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: August 18th 2010, 06:52 AM
  3. Replies: 2
    Last Post: March 29th 2010, 03:05 PM
  4. Hypergeometric Distribution Calculator
    Posted in the Math Software Forum
    Replies: 2
    Last Post: December 21st 2009, 05:36 PM
  5. Using skewed distribution vs Standard Normal Distribution
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: September 26th 2007, 06:22 PM

Search Tags


/mathhelpforum @mathhelpforum