4.4.1 Probability (A-level only)

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Question 47

The events $A\,$ and $B\,$ are such that $P(A)=1120\displaystyle P(A) = \frac{11}{20}$ , $P(A∩B)=320\displaystyle P(A \cap B) = \frac{3}{20}$ , $P(A∣B)=38\displaystyle P(A|B) = \frac{3}{8}$ . Find

a.

$P (B)$

[3]

b.

$\cup B)$

[3]

c.

$P (B ∣ A^{'})$

[3]

4.4.1 Probability (A-level only)

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Question 47

The events $A\,$ and $B\,$ are such that $P(A)=1120\displaystyle P(A) = \frac{11}{20}$ , $P(A∩B)=320\displaystyle P(A \cap B) = \frac{3}{20}$ , $P(A∣B)=38\displaystyle P(A|B) = \frac{3}{8}$ . Find

a.

$P (B)$

[3]

b.

$\cup B)$

[3]

c.

$P (B ∣ A^{'})$

[3]

4.4.1 Probability (A-level only)

Question 47

4.4.1 Probability (A-level only) Questions

4.4.1 Probability (A-level only)

Question 47

4.4.1 Probability (A-level only) Questions