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Using the P-Value Section 10.3

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P-Value (Observed Significance Level) It’s the measure of the inconsistency between the hypothesized value for a population parameter and the observed sample statistic. How likely is this sample if the H o is really true?

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Using the P-Value Reject if Fail to Reject if

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One tailed test (use the test statistic Z) P-value If the H o is really true, this is the probability of getting this z-score for the given data

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Two-Tailed Test P-Value: Sum of both tails We have to double this to get both tails!

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Let’s try one!

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For which of the following P-Values would the null hypothesis be rejected if we’re using a 0.05 significance level? 3.12 x 10 -5

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State whether the observed p-value leads to rejection of the null at the given significance level.

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Find the p-Value associated with each of the given test statistics (z-scores)

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Homework Page 546 (2-10) even (11-17, 20, 22, 31)

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