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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Calculate the probability of getting at most 1 head when flipping a coin 3 times.
💡 Hint: Remember to use the formula for the binomial probability.
Question 2
Easy
What does at least 3 successes mean when calculating cumulative probability?
💡 Hint: Think about the complement rule.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the cumulative probability for at most k successes?
- P(X = k)
- Σ P(X = i) for i <= k
- 1 - P(X ≤ k-1)
💡 Hint: Consider what 'cumulative' means.
Question 2
True or False: P(X ≥ k) can be calculated as 1 - P(X ≤ k).
- True
- False
💡 Hint: What does 'at least' indicate?
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have a biased coin that lands heads 30% of the time. After 10 flips, calculate the probability of getting at least 2 heads.
💡 Hint: Use the complement to find at least.
Question 2
In a survey of 100 households, 70 have internet access. If 10 households are randomly sampled, what's the cumulative probability that at least 5 have internet?
💡 Hint: Remember to find the probabilities for the range.
Challenge and get performance evaluation