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Math Help - Statistic Significance Level

  1. #1
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    Statistic Significance Level

    Assuming the population of left-handed people is 10%. Is there a difference between percent of left students in our class and the population at the 5% significance level?
    What information is given: In our class there is 60 students 3 of them are left handed.
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  2. #2
    MHF Contributor matheagle's Avatar
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    This is a two-sided hypothesis test for a proportion.

    =.1" alt="H_0=.1" /> vs. \ne .1" alt="H_a\ne .1" />.

    n=60, \hat p=.05 and you can use the normal approximation to get a z-score.
    The rejection region is  (-\infty, -1.96) \cup (1.96,\infty).
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