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Math Help - Questions about a sample chosen from a large population.

  1. #1
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    Questions about a sample chosen from a large population.

    Hi guys i got this question i do not understand how to answer it..

    Lettrman or leno? Who is the king of late night tv ? An
    Internet survey estimates that,when given a choice between David
    Letterman and Jay leno , 52% of the population prefers Jay Leno.
    Suppose that you select three people randomly and ask them which
    host they prefer.

    A) Find the Probability distribution
    for X, the number of people in the sample of three who would prefer
    Jay Leno ?

    C) What is the probaility that exactly
    one of the Three would prefer Jay Leno ?

    D) What are the population mean and
    standard deviation for the random variable x?
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  2. #2
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    Quote Originally Posted by lakasaan View Post
    Hi guys i got this question i do not understand how to answer it..

    Lettrman or leno? Who is the king of late night tv ? An
    Internet survey estimates that,when given a choice between David
    Letterman and Jay leno , 52% of the population prefers Jay Leno.
    Suppose that you select three people randomly and ask them which
    host they prefer.

    A) Find the Probability distribution
    for X, the number of people in the sample of three who would prefer
    Jay Leno ?

    C) What is the probaility that exactly
    one of the Three would prefer Jay Leno ?

    D) What are the population mean and
    standard deviation for the random variable x?
    X ~ Binomial(p = 0.52, n = 3).
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  3. #3
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    Thank you mr.Fantastic
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