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DISTRIBUSI BINOMIAL

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PROBABILITAS <strong>BINOMIAL</strong> KUMULATIFAdalah probabilitas dari peristiwa binomial lebih dari satu sukses.Rumusnya:n nP B K = C p x q n xx 0 xContoh:Sebanyak 5 mahasiswa akan mengikuti ujian sarjana dan diperkirakan probabilitaskelulusannya adalah 0,7. Hitunglah probabilitasnya!a. Paling banyak 2 orang lulusb. Yang akan lulus antara 2 sampai 3 orangc. Paling sedikit 4 diantaranya lulusJawab:a. n = 5 p = 0,7 q = 0,3P(x ? 2) = P(x = 0) + P(x = 1) + P (x = 2) = 0,16b. P(2 ? x ? 3) = P(x = 2) + P(x = 3) = 0,44c. P(x 4) = P(x = 4) + P(x = 5) = 0,53

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