2.3.2 Conditional probability (A-level only)

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Question 55

The events A and B are such that $P(A)=320\displaystyle P(A) = \frac{3}{20}$ , $P(A∩B)=120\displaystyle P(A \cap B) = \frac{1}{20}$ , $P(A∣B)=514\displaystyle P(A|B) = \frac{5}{14}$ . Find

a.

$P (B)$

[3]

b.

$\cup B)$

[3]

c.

$P (B ∣ A^{'})$

[3]

2.3.2 Conditional probability (A-level only)

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Question 55

The events A and B are such that $P(A)=320\displaystyle P(A) = \frac{3}{20}$ , $P(A∩B)=120\displaystyle P(A \cap B) = \frac{1}{20}$ , $P(A∣B)=514\displaystyle P(A|B) = \frac{5}{14}$ . Find

a.

$P (B)$

[3]

b.

$\cup B)$

[3]

c.

$P (B ∣ A^{'})$

[3]

2.3.2 Conditional probability (A-level only)

Question 55

2.3.2 Conditional probability (A-level only) Questions

2.3.2 Conditional probability (A-level only)

Question 55

2.3.2 Conditional probability (A-level only) Questions