4970028
Description
Flashcards by louise.chardon94, updated more than 1 year ago
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Created by louise.chardon94
about 8 years ago
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| Question | Answer |
| pour les symboles compliqués | |
| P(A U B) = | = P(A) + P(B) |
| P(IA) = | = 1 - P(A) |
| P(A U B) = | = P(A) + P(B) - P(A II B) |
| E(aX + b) = | = aE(X) + b |
| V(aX + b) = | = a puiss (2)V(X) |
| PA(B) = | = (P(A II B)) / (P(A)) |
| Evénement indépendants ssi P(A II B) = | = P(A) x P(B) Lorsque P(A) diff 0 et PA(B) = P(B) |
| Schema Bernoulli Loi Binomial | P(X=k) = (n k) x p puiss (k) (1 - p) puiss (n-k) B (n,p) |
| E(X) = V(X) = o(X) = | = np = np(1-p) = rac de (np(1-p)) |
| densité | nv chapitre |
| E(X) = | = S [ ; ] t f(t) dt = (a + b) / 2 |
| f(t) = | = 1/(b-a) = (d-c)/(b-a) |
| loi expo | f(t) = Ye puiss (-Yt) |
| loi sans mémoire | PX>t(X>t+h) = P(X>h) |
| E(X) = | = 1/Y |
| Demi-vie | t1/2 = ln2/Y |
| loi normal | f(x) = 1/ (rac de (2pi)) X e puiss (-xcarré/2) |
| normalcdf --> cherche probe invNorm --> cherche u dans P(x=u)=2 | (lower,upper, moyenne, écart type) (2,moyenne, écart type) |
| P(-1<X<1) P(-2<X<2) P(-3<X<3) | = 0,683 = 0,954 = 0,997 |
| variable = | = (X - moyenne) / écart type |
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