Practice Conditional Probability (7) - Probability - IB 10 Mathematics – Group 5, Statistics & Probability
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Conditional Probability

Practice - Conditional Probability

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the conditional probability of rolling a 6 on a die if you know it's an even number?

💡 Hint: Think about the possible outcomes of the die.

Question 2 Easy

If two cards are drawn from a deck without replacement, what is the probability that both are hearts?

💡 Hint: Use combinations to find the total favorable outcomes.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is conditional probability?

💡 Hint: Remember the formula P(A | B).

Question 2

If two events A and B are independent, then P(A ∩ B) equals what?

P(A) + P(B)
P(A) × P(B)
P(A | B)

💡 Hint: Think about non-affecting events.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A medical test has a false positive rate of 5% and a false negative rate of 10%. Given that a patient is healthy, what is the probability that they test positive for the disease?

💡 Hint: You will need to define the cases clearly.

Challenge 2 Hard

Consider a polluted water source. If 30% are hazardous and 60% of hazardous sources show contamination, find the chance a contaminated source is hazardous.

💡 Hint: Assess each part of the scenario carefully.

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