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Mathematics, 11.07.2021 15:30 brookefrancett
. Fie X o variabilă aleatoare continuă, cu densitatea de probabilitate f : R → R , ( ) 3 9 1 9 2 , 0 2 0, 0 x xe x f x x θ θ − > = ≤ , unde θ > 0. a) Să se calculeze M(X ). b) Folosind o selecție de volum n , să se găsească un estimator al parametrului θ prin metoda momentelor. c) Rezultatele observațiilor asupra variabilei aleatoare X sunt date în tabel. i x 2 2,5 3 ni 1 18 1 Să se afle valoarea mediei de selecție, valoarea dispersiei de selecție corectate și estimația parametrului θ
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. Fie X o variabilă aleatoare continuă, cu densitatea de probabilitate f : R → R , ( ) 3 9 1 9 2 , 0...
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