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# 409Exam2Bans - STAT 409 Fall 2009 Name Version B ANSWERS...

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Page 1 of 6 1. Let X have a Binomial distribution with the number of trials n = 8 and with probability of “success” p . We wish to test H 0 : p = 0.40 vs. H 1 : p > 0.40. a) (4) Suppose we decided to use the rejection region “Reject H 0 if X 6.” Find the significance level α associated with this rejection region. significance level α = P ( Reject H 0 | H 0 is true ) = P ( X 6 | p = 0.40 ) = 1 – P ( X 5 | p = 0.40 ) = 1 – 0.9502 = 0.0498 .
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409Exam2Bans - STAT 409 Fall 2009 Name Version B ANSWERS...

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