#Hypothesis Testing

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compact gorge
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How do you know whether to use binomial cd or pd for hypothesis testing?

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twilit night
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(a) Use X ~ Bin(n=18, p=0.14) (bi) evaluate pmf at k=1. (bii) evaluate 1-(pmf 0+pmf 1+pmf 2+pmf 3) (c) say "appropriate." to justify this, say, a large number of samples make the distinction between sampling with and without replacement irrelevant.

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(d) let the null (H0) be that the proportions are equal. let the alternative be that they are unequal. use a two-tailed test of difference of proportions. (e) use a normal distribution to approximate X's distribution, then apply a z-test of difference of means.

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(END) for any questions, elaborations, etc. mention me.