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17. Again, assume that the surgeon reflects what is in the literature survey (i.e., the survival rate is 71.4%), what is the

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Answer #1

X ~ B ( n = 19 , P = 0.714 )
P(X = ) = CHPQin-r)

P ( X <= 10 )
P(X =0) = C190.714)º(0.286) (19-0) = 0
P(X = 1) = C190.714)*(0.286) (19-1) = 0
P(X = 2) = C:19(0.714)2(0.286) (19–2) = 0
P(X = 3) = C.190.714)(0.286) (19-3) = 0
P(X = 4) = C190.714)*(0.286) (19-4) = 0
P(X = 5) = f(0.714)5(0.286) (19-5) = 0.0001
P(X = 6) = C19(0.714)(0.286) (19–6) = 0.0003
P(X = 7) = C190.714)7(0.286) (19–7) = 0.0014
P(X = 8) = C19(0.714)*(0.286) (19–8) = 0.0053
P(X = 9) = C)(0.714)º(0.286) (19–9) = 0.0163
P(X = 10 ) = C_{ 10}^{ 19} ( 0.714 )^{10} ( 0.286 )^{( 19 - 10 )} = 0.0407

P ( X <= 10 ) = 0.0641

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