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Binomial or normal?

  1. Oct 26, 2014 #1
    1. The problem statement, all variables and given/known data
    This involve testing population proportion. (either small or big sample) this question is done by my lecturer by using binomial , i am wondering could it be done using normal distribution? because the np is 20(0.45) = 9 which is greater than 5 , https://www.flickr.com/photos/110120...6/15432962168 [Broken]

    2. Relevant equations


    3. The attempt at a solution
     
    Last edited by a moderator: May 7, 2017
  2. jcsd
  3. Oct 26, 2014 #2

    Ray Vickson

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    Homework Helper

    Post the problem by typing it directly; I cannot open your link---I get a bad link message. Anyway, there are good reasons for NOT posting images; it is discouraged (although not outright forbidden) by PF. Read the pinned post 'Guidelines for students and helpers', by Vela.
     
    Last edited by a moderator: May 7, 2017
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