Summary
Samenvatting Hoofdstuk 15 normale verdelingen - Wiskunde A
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- Level
Boek: Moderne Wiskunde A editie 12 VWO
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WISKUNDE HOOFDSTUK 15PARAGRAAF 1 – PERCENTAGE BEREKENEN
Grafische rekenmachine, kans berekenen voor een normale verdeling waarbij de grenzen zo liggen dat je
geen vuistregels kunt gebruiken
Rekenmachine heeft informatie nodig
- Linkergrens
- Rechtergrens
- Gemiddelde
- Standaardafwijking
Grafische rekenmachine
1. In blauw > distr
2. Normalcdf (optie 2)
3. Lower > linkergrens
Upper > rechtergrens
4. Alles ingevuld > klik op paste
5. Klik enter
6. Schrijf het rijtje op je toetsblaadje
7. Antwoord in kans? > antwoord op rekenmachine
Antwoord in %? > doe antwoord rekenmachine x100%
Voorbeeld:
Waspoeder gewicht is normaal (404,3) verdeeld
Gevraagd:
Hoeveel procent tussen 400 en 412 gram?
Berekening
Normalcdf (400,412,404,3)
0,904
90,4%
Onduidelijke grenzen
407 of meer?
Linkergrens: 407
Rechtergrens: 1099
400 of minder
Linkergrens: -10-99
Rechtergrens: 400
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