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Thread: An engineer has observed that the gap times between...

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    An engineer has observed that the gap times between...




    I am struggling with this question ..please help

    An engineer has observed that the gap times between vehicles
    passing a certain point on a highway have a exponential distribution with mean of 10 seconds.

    1) Find the probability that the next gap observed will be no longer than 1 minute.

    2)Find the probability density function for the sum of the next four gap times to be observed. What assumption must be true for this answer to be correct?

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    Re: An engineer has observed that the gap times between...

    I solved the first question.. which is 0.095
    however I'm still struggling with the second.

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    Re: An engineer has observed that the gap times between...


    How did you get that first answer?
    I don't have emotions and sometimes that makes me very sad.

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