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IntroStat-notes 12-03-07

IntroStat-notes 12-03-07 - sample-state the conclusion of a...

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-in statistics, a hypothesis is a claim or statement about a property of a population -a hypothesis test (or test of significance ) is a standard procedure for testing a claim about a property of a population -if under a given assumption the probability of a particular observed even is really small, we conclude that the assumption is probably incorrect -given a claim, identify the null hypothesis and the alternative hypothesis, and express them both in symbolic form -given a claim and sample data, calculate the value of the test statistic -given a significance level, identify the critical value(s) -given a value of the test statistic, identify the P-value (the probability that we get that
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Unformatted text preview: sample)-state the conclusion of a hypothesis test in simple, non-technical terms-the null hypothesis (denoted by H sub 0 [zero]) is a statement that the value of a population parameter (such as proportion, mean, or standard deviation) is equal to some claimed value-we test the null hypothesis directly -either reject H0 or fail to reject H0-the alternative hypothesis (denoted by H sub 1, H sub a, or H sub A) is the statement that the parameter has a value that somehow differs from the null hypothesis-the symbolic form of the alternative hypotheses must use one of these symbols (<, >, or =strike out-not equal to)...
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