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[DOCX File]Humble Independent School District
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This test statistic is so large that by Table A the P-value is very close to 0 (by calculator, P-value = 0.00014). Conclude: A P -value of 0.00014 is much less than _ = 0.05, so we reject H 0 . We have sufficient evidence to conclude that the proportions of people who experience adverse reactions to acetaminophen and ibuprofen are different.
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[DOC File]Section 1
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B. Tests of significance. 2. Large sample test for a proportion. 4. Test for a mean. 5. Test for a difference between two means (paired) What you will learn: One-Sample t Test for µ (( unknown) Carry out a t test for the hypothesis that a population mean µ has a specified value against either a one-sided or a two-sided alternative.
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[DOC File]Section 1
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Perform a significance test for the difference between two population proportions. Vocabulary: None new. TI-83 Calculator Help: 2 Sample t-Test and Confidence Interval. If you have raw data: enter data in L1 and L2. Press STAT, TESTS, select 2-SampT-Test. raw data: List1 set to L1, List2 set to L2 and freq to 1. summary data: enter as before ...
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[DOCX File]Department of Mathematics
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test assumes an SRS of size . n . from a Normal . population. with known . population. standard deviation. σ. P-values. can be obtained either with computations from the . standard Normal distribution. or by using technology (calculator. or software). The essential reasoning of a significance test is as follows. Suppose for the sake of ...
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[DOC File]The Practice of Statistics
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What is the relationship between the significance level and the probability of Type I Error? Describe how to calculate the power of a significance test. Chapter 12: Significance Tests in Practice
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[DOC File]Chapter 11- Testing A Claim
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Increase α – A test at a 5% significance level will have a greater chance of rejecting the alternative than a 1% test because the strength of evidence required is less. Increase sample size – More data will provide more information about , so we have a better chance of distinguishing values of µ.
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[DOC File]Power and Sample Size Calculation
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Factors that affect statistical power include the sample size, the specification of the parameter(s) in the null and alternative hypothesis, i.e. how far they are from each other, the precision or uncertainty the researcher allows for the study (generally the confidence or significance level) and the distribution of the parameter to be estimated.
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[DOC File]Exam 3 Practice Questions
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2. Suppose you conduct a significance test for the population proportion and your p-value is 0.184. Given a 0.10 level of significance, which of the following should be your conclusion? a) accept HO. b) accept HA. c) Fail to reject HA. d) Fail to reject HO. e) Reject Ho. 3.
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[DOC File]Survey Software - Crosstabs Software - Online and Paper ...
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Statistics Calculator uses lsd (least significant difference) t-tests for all post-hoc comparisons. For the post-hoc tests, use the same critical alpha level that you used to test for the significance of the F-ratio. Example. A company has offices in four cities with sales representatives in each office.
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Test of significance calculator