Value of test statistic formula
[DOC File]AP Statistics – Chapter 9 Notes
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Z-test for a Population Mean. The formula for the z test statistic is where is the value of specified by the null hypothesis. The test statistic z says how far is from in standard deviation units. P-value. The p-value of a test is the probability that we would get this sample result or one more extreme if the null hypothesis is true.
[DOC File]MTH 265 – Statistics for Scientists and Engineers
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Be able to calculate the value of the F test statistic. Be able to compute the P-value and be able to write out the probability statement for the P-value that involves the test statistic. Be able to determine whether or not the null hypothesis should be rejected. 7.1 Correlation. What is the correlation coefficient? Read pages 500 and 501.
[DOC File]CBS Semester 1 David Juran Statistics Final Cheat Sheets
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Statistic (Mapped to Output Above) Symbol Formula Statistic (Mapped to Output Above) Symbol Formula Dependent Variable (sample mean of n observations) 0.9155. R-square (Coefficient of Determination) Dependent Variable (estimated value for a given vector of …
[DOC File]Spring 1998
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a. Let z be the computed test statistic value. Reject H0 when P-value ( ( and fail to reject H0 when P-value > (. b. Rejection region for level ( test: reject H0 if Lower tailed test P-value = Upper tailed test P-value = Two-tailed test P-value = c. If n is sufficiently large, 100(1-()% large sample confidence interval for …
[DOC File]Formulas and Relationships from Linear Regression
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Recall the -test statistic for testing against appropriate alternative hypotheses: Thus we have. So the -test statistic is the square of the -test statistic for the slope of the regression line. Thus it turns out that in single variable regression, using the -test statistic is equivalent to testing if …
[DOC File]Mind On Statistics Test Bank
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A hypothesis test for a population proportion p is given below: H0: p = 0.10. Ha: p 010. For each sample size n and sample proportion compute the value of the z-statistic: Sample size n = 100 and sample proportion = 0.10. z-statistic = ? –1.00. 0.00 0.10 1.00 Sample size n = 100 and sample proportion = 0.15. z-statistic = ? –1.12
[DOC File]Formula Sheet and List of Symbols, Basic Statistical Inference
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Formula Sheet and List of Symbols, Basic Statistical Inference. Symbol What it Represents. X variable. sample mean. μ population mean. s sample standard deviation. s2 sample variance. σ population standard deviation. σ2 population variance. sample proportion. p population proportion. q 1-p. n sample size. α significance level
[DOC File]Statistical Inference: A Summary of Formulas and Methods
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Normal curve Ask your instructor which test statistic is used in your course. Single population mean () Sample mean () where s is the sample standard deviation of the x values. where is the hypothesized value of the population mean . t-curve with (n-1) df Use t-curves for averages Difference in two population means () Two separate samples.
[DOC File]Advanced Excel - Statistical functions & formulae
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A test of great importance is whether or not all the means are equal. P-Value . The probability value (p-value) of a statistical hypothesis test is the probability of getting a value of the test statistic as extreme as or more extreme than that observed by chance alone, if the null hypothesis H0, is true.
[DOC File]Chapter 7 Part II Hypothesis Testing
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Step 3 Compute the test value. Step 4 Make the decision to reject or not reject the null hypothesis. Step 5 Summarize the results. Section 8.3 z Test for a Mean. I. Test Statistic. The z test is a statistical test for the mean of a population. It can be used when , or when …
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