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    debwm's Avatar
    debwm Posts: 1, Reputation: 1
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    #1

    Feb 15, 2012, 01:57 AM
    Probability
    I am hosting an event. 80 invitations are sent out. How can I work out the probability of how many will actually attend the event?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Feb 15, 2012, 07:06 AM
    You can't work this out without more information. You would need to know the probability of any one person accepting the invitation - suppose that value is p. Then you can determine the probability of k people out of 80 accepting by using the binomial probability formula:
    neerajtiwari's Avatar
    neerajtiwari Posts: 2, Reputation: 1
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    #3

    Feb 18, 2012, 11:09 PM
    n(S)= 80 invitations.
    Let n(A) be the event that the members will attain.
    Thus,
    P(S) = n(A)/n(S)


    the ratio between number of members attaining "A" to total number of members "S" will give you the Probability of members attaining...
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