P value vs significance level
[DOC File]1
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1. A significance test gives you a P-value of .04. From this we can (a) Reject at 1% significance level (b) Reject at 5% significance level (c) Say that the probability that is false is .04 (d) Say that the probability that is true is .04 (e) Say the results are significant at the 1% level. 2.
[DOC File]AP Statistics Chapter 2 Test
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Feb 07, 2012 · Thus the P-value (or observed level of significance) of the test is approximately equal to: 0.90 0.40 0.05 0.20 0.10 9. A significance test allows you to reject a hypothesis H0 in favor of an alternative Ha at the 5% level of significance.
[DOC File]Test 11A - Kenwood Academy High School
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The p-value represents the probability of observing a sample outcome more contradictory to H0 than the observed sample result. The smaller the p-value, the stronger the evidence is against the null hypothesis. To draw conclusions using p-value, you compare the p-value with and draw your conclusions using the following rule. If the p-value ...
[DOC File]2-sample t-test
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Use the given sample data to find the P-value for the significance test. Give an . interpretation of the P-value. n1 = 200, = 0.10, n2 = 200, = 0.08. A) P-value = 0.2119; If there is no difference in the proportions, there is about a 21.19% chance of seeing the observed difference or larger by natural sampling variation.
[DOC File]Name:___________________________________
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The p-value is less than 0.01, so we can reject the null hypothesis at the 5% significance level, and also at the 1% significance level. (c) The t-statistic is. The p-value for the test vs. is. p-value = The p-value is larger than 0.10, so we cannot reject the null hypothesis at the 10%, 5% or 1% significance level.
[DOC File]Hypothesis Test for a Population Mean
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With the p-value 0.006 and the significance level 0.01, we conclude that customers who use the Q-Mart card charge, on average, more than those who use another charge card, i.e., Reject H0 at = 1%. Notice that the reported t-statistic 2.925 means that the difference in the two sample means is 2.925 standard deviations above the hypothesized ...
[DOC File]STAT 515 -- Chapter 8: Hypothesis Tests
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vs. (lower-tail test) (upper-tail test) (two-sided test) Significance level. Test statistic. With df = P-value = if . if = if . Conclusion: Reject if p-value , and draw conclusion according to Otherwise do not reject , and draw conclusion according to Ex2. Mary can take either a scenic route to work or a non-scenic route.
[DOC File]Answer Key : Practice Final Examination
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A journal article reported that the null hypothesis of (=100 for the two tailed test was rejected because the P-value was less than the significance level of 0.01. For that normally distributed random sample, the sample mean was 103.6 and the sample size was 62.
What is the difference between the P value and the level ...
The P-value (or “observed significance level”) of a test is the probability of observing as extreme (or more extreme) of a value of the test statistic than we did observe, if H0 was in fact true. The P-value gives us an indication of the strength of evidence against H0 (and for Ha) in the sample.
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