Compare the obtained t-value statistic to the "critical t-value" found in your distribution t-table chart to determine whether you should reject the null hypothesis or accept the alternative hypothesis. References Social Research Methods: The T-Test Rice University: 'Student's' T Test (For Inde...
What is the formula for a t test? The exact formula depends on which type of t test you are running, although there is a basic structure that all t tests have in common. All t test statistics will have the form: t: The t test statistic you calculate for your test ...
In a one-sample test (either a t-test or a z-test), we will typically calculate one test statistic, and then either use that test statistic's critical values or a p-value to determine our conclusion. In a two-sample test, we are comparing means (for example, testing a claim that ...
Explain how a t-test, for a dependent variable, can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students. Why would this t Test be preferred to using another test statistic?
Describe the effect on the test statistic and the p-value when the sample size increases. Explain when to use a one-tailed test and when to use a two-tailed test. In multiple regression, there is more than one independent variable. a. True. b. False. ...
Depending on the test you run, you may see other statistics that were used to calculate the P value, including the mean difference, t statistic, degrees of freedom, and standard error. The confidence interval and a review of your dataset is given as well on the results page. ...
6) Is this a 1 or 2 tailed test? 1-tailed 7) Therefore, what is Zα ? 1.64 8) What is the test statistic (x-bar)? 14.75 inches 9) What is t-calculated? μo + Zα * (σ/√n) 14.75 + (1.64)(0.30 / √49) = 14.75 + (1.64)(0.0428571) = 14.75 + 0.07 = 14.82 inches...
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Red Z (σ) - The actual type I error for the z-test when using the population standard deviation.We should use the more accurate population standard deviation, and not the estimated sample standard deviation, and the next simulation chart is as expected....