Samenvatting Statistiek 2 - Hoofdstuk 16 t/m 19 - Statistical Methods for Business and Economics
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Course
Statistiek II
Institution
Tilburg University (UVT)
Book
Statistical Methods for Business and Economics
Overzicht/samenvatting van de stof voor de midterm van Statistiek 2. Hoofdstuk 16 t/m 19 van Statistical Methods for Business and Economics. Vooral de slides gebruikt, eigen aantekeningen en het boek.
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Samenvatting
Statistical Methods for Business and Economis
Hoofdstuk 16 t/m 19 (stof midterm Statistiek 2)
Inclusief functies excel en GR TI-84 plus
,Statistiek 2
Terugblik normaal verdeling & hypothese testen
Hypothese test 1
1) H0: � ≤ �0
H1: � > �0
2) Test statistic:
x́−μ
Z= o
Hypothese gemiddelde en standaardafwijking invullen
3) Reject H0 z ≥ zα
z-waarde opzoeken in de tabel van de standaard normaal verdeling,
door te zoeken naar 1-α
of via InvNorm(opp)
x́−μ
4) Val =
o
alles invullen
5) H0 verwerpen als z ≥ zα
conclusie trekken of H0 wordt verworpen of niet
Hypothese test 2
1) H0: � ≥ �0
H1: � < �0
2) Test statistic:
x́−μ
Z= o
3) Reject H0 z ≤ -zα
x́−μ
4) Val =
o
5) H0 verwerpen als z ≤ -zα
Hypothese test 3
1) H0: � = �0
H1: � ≠ �0
2) Test statistic:
x́−μ
Z= o
3) Reject H0 z ≤ -zα/2 or z ≥ zα/2
x́−μ
4) Val =
o
5) H0 verwerpen als z ≤ -zα/2 of z ≥ zα/2
2
, Chapter 16
Normaal verdeling: te gebruiken wanneer � en σ beide bekend zijn.
Hypothese test:
Intervalschatter:
Student (T) verdeling: te gebruiken wanneer � wel bekend is, maar als σ
nog onbekend
De verdeling:
Vrijheidsgraden (degrees of freedom): n-1
Intervalschatter:
3
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