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Conditional Probability

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Question 103

An analysis of a digital archive of ancient manuscripts reveals that 35% of the manuscripts are written in Latin. It is also found that 45\displaystyle \frac{4}{5}54​ of the manuscripts in the archive contain hand-drawn illustrations. Of the manuscripts that contain hand-drawn illustrations, the probability that a randomly chosen manuscript is written in Latin is 0.3.

Find the probability that a manuscript chosen at random from the archive:

a.

is written in Latin and contains hand-drawn illustrations.

[2]
b.

is not written in Latin and does not contain hand-drawn illustrations.

[3]
c.

Determine, giving your reason, whether or not the events 'written in Latin' and 'contains hand-drawn illustrations' are statistically independent.

[2]

Conditional Probability Questions

  1. A Level
  2. /Maths
  3. /Conditional Probability

Practise Edexcel A Level Maths Conditional Probability with exam-style questions for A Level Maths. 152 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank