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    Chapter 7 - Hypothesis.

    Someone please explain to me why the probability is 0.5????
    isnt it 4/5???
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    ANYONE? plsssssss
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    (Original post by hajs)
    Chapter 7 - Hypothesis.

    Someone please explain to me why the probability is 0.5????
    isnt it 4/5???
    H0: p=0.5 there is no preference between margarine and butter (equally preferred)
    H1: p>0.5 there is preference for margarine

    Let X be the number of people in a sample of 5 who prefer margarine
    Binomial model X ~B(5,0.5)

    P(X>=4) = ...


    I can see why this question is confusing.
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    (Original post by TeeEm)
    H0: p=0.5 there is no preference between margarine and butter (equally preferred)
    H1: p>0.5 there is preference for margarine

    Let X be the number of people in a sample of 5 who prefer margarine
    Binomial model X ~B(5,0.5)

    P(X>=4) = ...


    I can see why this question is confusing.
    Yeah thank you, but how would you know this, because all binomial has two outcomes, so it cant always be 0.5?
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    *BUMP*
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    (Original post by hajs)
    Yeah thank you, but how would you know this, because all binomial has two outcomes, so it cant always be 0.5?
    look at post 3 again the bits in bold and in colour
 
 
 
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