Dimostrare e argomentare.
C(5,4)*0.8^4*0.2+C(5,5)*0.8^5
0.73728 controlla i calcoli
COMB(5, 4)·80%^4·20% = 256/625
COMB(5, 5)·80%^5·20%^0 = 1024/3125
256/625 + 1024/3125 = 2304/3125
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