Discrete Random Variables quick quiz

Beschreibung

A Levels Maths Quiz am Discrete Random Variables quick quiz, erstellt von luisnorth am 12/02/2014.
luisnorth
Quiz von luisnorth, aktualisiert more than 1 year ago
luisnorth
Erstellt von luisnorth vor fast 11 Jahre
41
1

Zusammenfassung der Ressource

Frage 1

Frage
X~B(10,0.5) E(X)=
Antworten
  • 0.1
  • 0.5
  • 2.5

Frage 2

Frage
X~Geo(0.5) P(X=0) = 1
Antworten
  • True
  • False

Frage 3

Frage
A bag contains 5 white rabbits and 8 black rabbits. As part of a magic trick, two are removed at the same time. What is the probability they are both white?
Antworten
  • 14/39
  • 20/39
  • 1
  • 20/169
  • 0
  • 5/39

Frage 4

Frage
X~Geo(p) E(x) = ?
Antworten
  • 1/p
  • (1-p)^x-1 * p
  • np
  • Σ(x^2 * p) - μ^2
Zusammenfassung anzeigen Zusammenfassung ausblenden

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