STATISTICS I (İSTATİSTİK) - (İNGİLİZCE) Dersi Discrete Probability Distributions soru detayı:

PAYLAŞ:

SORU:
The probability of a student passing statistics course is 60 %. If 4 students take the statistics course what is the probability of at most 2 students being succesfull?

CEVAP:
P(X ? 2)=P(X=0)+P(X=1)+P(X=2)

P(X=0)=C(4,0)0.6⁰0.4⁴=0.0256

P(X=1)=C(4,1)0.6¹0.4³=0.1536

P(X=2)=C(4,2)0.6²0.4²=0.3456

so:

P(X ? 2)=P(X=0)+P(X=1)+P(X=2)=0.0256+0.1536+0.3456=0.5248

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