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VOLLEDIGE Samenvatting van de Verschillende Hypothesen (Biostatistiek, 2de BMW)

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Uitgebreide, volledige samenvatting van Verschillende Hypothesen. Dit komt voor in het vak Biostatistiek in het 2de jaar Biomedische wetenschappen (2024-25). Ik heb zelf alles geleerd uit deze samenvatting en was geslaagd in eerste zit.

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Uploaded on
July 11, 2025
Number of pages
3
Written in
2024/2025
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Verschillende hypothese testen

1. One-sample test for the mean of a normal distribution with unknown variance


Wanneer gebruik je dit?
● Je wilt het gemiddelde (μ) van een populatie toetsen.
● De populatie is normaal verdeeld.
● De standaardafwijking (σ) van de populatie is onbekend.


Toets:
● t-toets voor één steekproef (one-sample t-test).


Hypothesen:
● H0: μ=μ0 (het populatiegemiddelde is gelijk aan μ0​).
● Ha: μ≠μ0, μ>μ0​, of μ<μ0 (afhankelijk van de onderzoeksvraag).


Voorbeeld:
Je wilt weten of het gemiddelde gewicht van een product verschilt van 500 gram. Je neemt
een steekproef en kent de standaardafwijking van de populatie niet.




2. One-sample test for the mean of a normal distribution with known variance


Wanneer gebruik je dit?
● Je wilt het gemiddelde (μ) van een populatie toetsen.
● De populatie is normaal verdeeld.
● De standaardafwijking (σ) van de populatie is bekend.


Toets:
● Z-toets voor één steekproef (one-sample Z-test).


Hypothesen:
● H0:μ=μ0 (het populatiegemiddelde is gelijk aan μ0​).
● Ha:μ≠μ0​, μ>μ0​, of μ<μ0


Voorbeeld:
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