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### DefinitionsUpDw('Definitions','-Abz-');

1. When a true null hypothesis is rejected, it is called Type I error (a).

### Random VariableUpDw('RANDOM_VARIABLE','-Abz-');

1. For any hypothesis, we define a random variable H i that equals 0 if it is under H 0 (true null hypothesis), and equals 1 under H 1 (false null).

### Test StatisticUpDw('TEST_STATISTIC','-Abz-');

1. Generally, if the distribution of the test statistic is continuous, under the true null hypothesis, the P value is uniformly distributed between 0 and 1.

### Collecting DataUpDw('COLLECTING_DATA','-Abz-');

1. However, formulating the null hypothesis before collecting data, rejects a true null hypothesis only a small percent of the time.

### RejectingUpDw('REJECTING','-Abz-');

1. Alpha is a probability, a probability of rejecting a true null hypothesis.

### False Null HypothesisUpDw('FALSE_NULL_HYPOTHESIS','-Abz-');

1. The outcome that a researcher desires is to reject a false null hypothesis or to fail to reject a true null hypothesis.

### True Null HypothesisUpDw('TRUE_NULL_HYPOTHESIS','-Abz-');

1. Before data is collected one must specify a level of significance, or the probability of committing a Type I error (rejecting a true null hypothesis).
2. It is the minimum probability of not rejecting a true null hypothesis (committing a Type I error) and is equal to one minus the significance level.
3. Alpha - the probability of a Type I error, which is a situation where a true null hypothesis is incorrectly rejected.

### CategoriesUpDw('Categories','-Abz-');

1. False Null Hypothesis
2. Rejecting
3. Significance Level
4. Encyclopedia of Keywords > Information > Error
5. Collecting Data
6. Books about "True Null Hypothesis" in Amazon.com  Short phrases about "True Null Hypothesis"   Originally created: April 04, 2011.   Please send us comments and questions by this Online Form   Please click on to move good phrases up.
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