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Chapter 9

Hypothesis Testing

Qu’est-ce qu’une hypothèse ?
Qu’est-ce qu’une hypothèse ?
A hypothesis can be a simple sentence or statement about a property or any phenomenon observed or predicted for a population. It is usually a claim about ...
Hypothèses nulles et alternatives
Hypothèses nulles et alternatives
The actual hypothesis testing begins by considering two hypotheses. They are termed  the null hypothesis and the alternative hypothesis. These ...
Région critique, valeurs critiques et niveau de signification
Région critique, valeurs critiques et niveau de signification
The critical region, critical value, and significance level are interdependent concepts crucial in hypothesis testing. In hypothesis testing, a sample ...
Valeur <em>P</em>
Valeur P
P-value is one of the most crucial concepts in statistics. P-value stands for the probability value.  P-value is the probability that, if the null ...
Types de tests d’hypothèses
Types de tests d’hypothèses
There are three types of hypothesis tests: right-tailed, left-tailed, and two-tailed. When the null and alternative hypotheses are stated, it is observed ...
Prise de décision : méthode de la valeur <em>P</em>
Prise de décision : méthode de la valeur P
The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it. First, a ...
Prise de décision : méthode traditionnelle
Prise de décision : méthode traditionnelle
The process of hypothesis testing based on the traditional method includes calculating the critical value, testing the value of the test statistic using ...
Hypothèse : accepter ou ne pas rejeter ?
Hypothèse : accepter ou ne pas rejeter ?
The outcome of any hypothesis testing leads to rejecting or not rejecting the null hypothesis. This decision is taken based on the analysis of the data, ...
Erreurs dans les tests d’hypothèses
Erreurs dans les tests d’hypothèses
When performing a hypothesis test, there are four possible outcomes depending on the actual truth (or falseness) of the null hypothesis and the decision ...
Tester une affirmation sur la proportion de la population
Tester une affirmation sur la proportion de la population
A complete procedure for testing a claim about a population proportion is provided here. There are two methods of testing a claim about a population ...
Test d’une allégation sur la moyenne : Population connue SD
Test d’une allégation sur la moyenne : Population connue SD
A complete procedure of testing the hypothesis about a population mean is explained here. Estimating a population mean requires the samples to be ...
Test d’une affirmation sur la moyenne : Population inconnue ET
Test d’une affirmation sur la moyenne : Population inconnue ET
A complete procedure of testing a hypothesis about a population mean when the population standard deviation is unknown is explained here. Estimating a ...
Test d’une affirmation sur l’écart-type
Test d’une affirmation sur l’écart-type
A complete procedure to test a claim about population standard deviation or population variance is explained here. The hypothesis testing for the claim of ...
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