Unformatted text preview: 4. True.(2 points) 5. (a) (2 points) H : The coin is fair. H a : The coin is not fair. (Also acceptable: H : The coin lands heads/tails half the time. H a : The coin does not land heads/tails half the time.) (Also acceptable: H : p or another choice of symbol = 0 . 5 . H a : p 6 = 0 . 5 . ). (b) (2 points) A type I error occurs if we conclude the coin is not fair (also acceptable: does not land heads/tails half the time) when in fact it is fair (also acceptable: lands heads/tails half the time). A type II error occurs if we conclude the coin is fair (also acceptable: lands heads/tails half the time) when in fact it is not fair (also acceptable: does not land heads/tails half the time). 6. We should fail to reject H . since the pvalue is bigger than the signiﬁcance level. (3 points) Total: 30 points...
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 Spring '08
 TA
 Statistics, Democracy, Type I and type II errors

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