Practice - Example 1 – Cumulative Probability
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Practice Questions
Test your understanding with targeted questions
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.
What does at least 3 successes mean when calculating cumulative probability?
💡 Hint: Think about the complement rule.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the cumulative probability for at most k successes?
💡 Hint: Consider what 'cumulative' means.
True or False: P(X ≥ k) can be calculated as 1 - P(X ≤ k).
💡 Hint: What does 'at least' indicate?
1 more question available
Challenge Problems
Push your limits with advanced challenges
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.
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.
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