If P(S) = 0.3, P(T ) = 0.4 and S and T are independent events, then P(

1.	If P(S) = 0.3, P(T ) = 0.4 and S and T are independent events, then P(S/T) is equal to(a) 0.12 (b) 0.2 (c) 0.3 (d) 0.4
Answer» Answer: (c) 0.3 S and T being independent events, P(S ∩ T) = P(S) × P(T) = 0.3 × 0.4 P(S/T) = \(\frac{P(S\,\cap\,T)}{P(T)} = \frac{0.3\times 0.4}{0.4}\) = 0.3

If P(S) = 0.3, P(T ) = 0.4 and S and T are independent events, then P(S/T) is equal to(a) 0.12 (b) 0.2 (c) 0.3 (d) 0.4

Answer»

Answer: (c) 0.3

S and T being independent events,

P(S ∩ T) = P(S) × P(T) = 0.3 × 0.4

P(S/T) = \(\frac{P(S\,\cap\,T)}{P(T)} = \frac{0.3\times 0.4}{0.4}\) = 0.3

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If P(S) = 0.3, P(T ) = 0.4 and S and T are independent events, then P(S/T) is equal to(a) 0.12 (b) 0.2 (c) 0.3 (d) 0.4

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