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Math Help - Data Management - Probability Distributions

  1. #1
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    Data Management - Probability Distributions - SOLVED

    Sonic pizza delivers 80% of its pizza on time. What is the prob that its first 4 pizzas will be late on any given day?
    Ok so the prob. of success is 80% 0.8 and failure is 20% 0.2...

    I need to find the prob. which happens to be P(X) = q^x p

    I am really stuck at that part....
    Last edited by Faisal2007; January 4th 2009 at 08:49 PM.
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  2. #2
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    Quote Originally Posted by Faisal2007 View Post
    Ok so the prob. of success is 80% 0.8 and failure is 20% 0.2...

    I need to find the prob. which happens to be P(X) = q^x p

    I am really stuck at that part....
    You're not told anything except that the first 4 deliveries are late. So the probability is (0.2)^4, assuming that each delivery is independent.
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  3. #3
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    I have been trying that for a long time...

    the only choices i have are 0.1296
    0.05184
    0.00128
    0.0016
    None

    I guess it none of the above.

    Thanks alot sir.
    I really appreciated your help.
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