Results 1 to 2 of 2

Math Help - Exponential distribution probability

  1. #1
    Senior Member sfspitfire23's Avatar
    Joined
    Oct 2009
    Posts
    273

    Exponential distribution probability

    Taxis depart the railway station to the airport from the early morning till late at night. Taxis leave the railway station with independent interdeparture times that are exponentially distributed with an expected value of 20 minutes. Suppose you plan to arrive at the station at 3 pm. What is the expected value and standard deviation of you waiting time?

    Attempt:

    Let X be your waiting time. I know that lambda = n * p. But how do you get lambda here? After I get lambda, I'm going to use the density function times x to get the expected value. But what do I integrate over? 0 to infinity?

    Thanks.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Mar 2013
    From
    New York
    Posts
    15
    Thanks
    1

    Re: Exponential distribution probability

    Hi:

    Please call for a detailed solution.

    Howard Heller
    InteractiveMathTutor.com
    (212) 874-4105
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. probability theory-expected vales for exponential distribution
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: September 8th 2012, 10:03 PM
  2. Replies: 3
    Last Post: August 13th 2011, 12:10 PM
  3. Replies: 0
    Last Post: March 14th 2010, 05:49 AM
  4. Exponential distribution
    Posted in the Statistics Forum
    Replies: 1
    Last Post: November 19th 2009, 02:15 PM
  5. Probability/functional equation/exponential distribution
    Posted in the Advanced Statistics Forum
    Replies: 11
    Last Post: January 26th 2008, 08:25 PM

Search Tags


/mathhelpforum @mathhelpforum