Test for statistical significance
[DOC File]SIGNIFICANCE TEST, CONFIDENCE INTERVAL, BOTH, OR …
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A measure of how unlikely the test statistic would be if the null hypothesis were true is the _____. Answer: p-value. A _____ test is a statistical procedure that is used to determine whether or not there is a relationship between two categorical variables. Answer: chi-square. SECTION 13.4. practical versus statistical significance
[DOC File]SPSS & Hypothesis Testing - Pacific University
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Planning studies: The power of a statistical test. A significance test. is a formal procedure for comparing observed data with a claim (also called a . hypothesis) whose truth we want to assess. The claim is a statement about a parameter, like the population proportion . p. or the population mean . μ
[DOCX File]G*Power: T Tests
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Using a critical value of t = 2.03, the two-sided 95% confidence interval extends from 51.85 to 72.15. On a scale from 1 to 3 (where 1= just plain wrong, 2= wrong but generally conveys the right idea, and 3 = correct), rate each of the folowing wordings for the significance test and for the confidence interval: 1.
[DOC File]CHAPTER 1
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Do not change the pre-test scores. In other words, the exercise program had an affect on attitude. Determine how many times statistical significance (α=.05) would be falsely rejected if this study was repeated 100 times. I.e., hit F9 100 times and note the p-value after each hit.
[DOC File]Summary of Statistical Significance Testing
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Hypothesis Testing . Hypothesis testing is a decision making process for evaluating claims about a population. The researcher must: Define the population under study . State the hypothesis that is under investigation . Give the significance level . Select a sample from the population . Collect the data . Perform the statistical test . Reach a ...
[DOCX File]Obtaining Exact Significance Levels With SAS
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Test Hypothesis (HA): This is your research hypothesis. Null Hypothesis (HO): This is the hypothesis you test statistically. Relevant (Test) Statistic Significance / Probability .05; Interpretation Note that we can . only. accept the test hypothesis by rejecting the null hypothesis. Cross ...
Tests of Statistical Significance – howMed
Test Statistics. A significance test uses data in the form of a test statistic. Here are some principles that apply to most tests: a. b. c. In the example with the response times the null hypothesis was _____, and the estimate was _____. Since we are using = 2 minutes for the distribution of response times this year, our test statistic is
[DOCX File]Statistics # 1 – Central Tendency and Plotting
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1) Each of the following situations requires a significance test about a population mean . State the appropriate null hypothesis H0 and alternative hypothesis Ha in each case: a. Census Bureau data shows that the mean household income in the area served by a shopping mall is $72,500 per year.
[DOC File]AP Stats Chapter 11 Notes: Significance Tests
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of 15. We administer the drug, wait a reasonable time for it to take effect, and then test our subjects’ IQ. We have decided that the minimum nontrivial effect size is 5 points. We shall use a .05 criterion of statistical significance and plan to have 25 subjects. What is power if the effect of the drug is to increase mean IQ by five points?
[DOC File]Hypothesis Testing Worksheet
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Obtaining Exact Significance Levels With SPSS. It is so easy to obtain exact significance levels with SPSS, that I shall expect you to obtain exact . p' s for all tests of statistical significance which you conduct using the normal curve, the binomial distribution, the Chi-square distribution, and the . t. and . F
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