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What does it mean when the test statistic is 0?
A test statistic is a standardized value that is calculated from sample data during a hypothesis test. A t-value of 0 indicates that the sample results exactly equal the null hypothesis.
Is null hypothesis H0 or Ho?
C. The hypothesis actually to be tested is usually given the symbol H0, and is commonly referred to as the null hypothesis. The other hypothesis, which is assumed to be true when the null hypothesis is false, is referred to as the alternative hypothesis, and is often symbolized by HA or H1.
When to use a null hypothesis in a statistical test?
For any combination of sample sizes and number of predictor variables, a statistical test will produce a predicted distribution for the test statistic. This shows the most likely range of values that will occur if your data follows the null hypothesis of the statistical test.
Which is the best definition of a test statistic?
Revised on January 7, 2021. The test statistic is a number calculated from a statistical test of a hypothesis. It shows how closely your observed data match the distribution expected under the null hypothesis of that statistical test.
How to calculate the one sample t test statistic?
The null hypothesis ( H0) and (two-tailed) alternative hypothesis ( H1) of the one sample T test can be expressed as: where µ is the “true” population mean and µ 0 is the proposed value of the population mean. The test statistic for a One Sample t Test is denoted t, which is calculated using the following formula:
How is the p value of a statistic calculated?
The test statistic is a number calculated from a statistical test of a hypothesis. It shows how closely your observed data match the distribution expected under the null hypothesis of that statistical test. The test statistic is used to calculate the p-value of your results, helping to decide whether to reject your null hypothesis.