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-   -   Probability? (https://www.askmehelpdesk.com/showthread.php?t=76956)

  • Mar 28, 2007, 07:36 PM
    tytee12
    probability?
    If 40% of the community goes to the car wash, find thes probabilitites for a sample of 13 people:

    Exactly 7 people go to the car wash.

    At most 8 people go to the car wash

    At least 6 people go to the car wash.

    Less than 5 people go to the car wash.
  • Mar 28, 2007, 07:59 PM
    worthbeads
    Can you rephrase the question please.
  • Mar 28, 2007, 11:46 PM
    Capuchin
    Yes, your question makes no sense, you're saying that exactly 0.40 percent go to the carwash, so out of 13 people, 5.2 will go to the car wash.

    So exactly 7 has a probability of 0
    8 or less has a probability of 1
    6 or more has a probability of 0
    less than 5 has a probability of 0.

    Do you see how the question doesn't make sense?
  • Mar 29, 2007, 04:35 AM
    galactus
    This is classic binomial probability:

    a.

    b.

    c.

    d.

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