Two tailed hypothesis test at the 5 level of significance
[DOC File]Applications of z test (two-tailed)
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Commuting distances are obtained for a random sample of 169 workers form this area, and the mean distance is found to be 15.5 miles. Test the null hypothesis at the 0.05 level of significance. Review of the assumptions for z test:
[DOC File]Columbia University in the City of New York
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If a 0.10 level of significance is used in a two-tailed hypothesis test, what will be your decision rule in terms of z for rejecting a null hypothesis that the population mean is 500? In this case, each tail must contain 5%, so we look in the middle of the z-table for a value near 0.45, and we find that it corresponds to approximately 1.645 ...
Run Me a Hypothesis Test Worksheet
Use a 5% level of significance. What type of hypothesis test do we run? Ho : Ha : Is this a right, left or two-tailed test? Sketch a curve and shade the rejection region. Is the critical vale a z or t? Why? What is the value? Use you calculator to find the calculated value of z or t and the P Value. ... Use a 1% level of significance. What type ...
[DOC File]Multiple Choices Test on Hypothesis Testing
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A hypothesis test is to be performed to determine whether the mean waiting time during peak hours for customers in a supermarket has increased from the previous mean waiting time of 8.2 minutes. ... This hypothesis test is classifies as... (A) Two-tailed (B) Right-tailed (C) Opposite-tailed (D) left-tailed ... With level of significance 5%, the ...
[DOC File]STAT 515 -- Chapter 8: Hypothesis Tests
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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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