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Math Help - Normal or Binomial *slaps head*

  1. #1
    Newbie DefilerAlpha's Avatar
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    Normal or Binomial *slaps head*

    If a question was something like this...

    A poll taken of n=100 randomly selected people estimates a proportion of a large population that prefers Food A. The actual proportion of the population is p = 0.64 that prefers Food A. Let X and p-hat be the number and proportion respectively of the 100 polled who prefer Food A.

    Now, the question asks to name the distribution of X and give the values of any parameters involved. I am not sure what distribution this is (although I suspect binomial) and I'm confused by parameters... help!
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  2. #2
    Senior Member
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    You're right, X has a binomial distribution with parameters n and p.
    You don't need to worry about the estimator p-hat as the distribution would be the same even if you weren't calculating an estimator.
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