Calculate Probability of Heads and Red Balls Drawing

Q: Calculate Probability of Heads and Red Balls Drawing

This question evaluates a candidate's understanding of elementary probability concepts, specifically the distinction between binomial distributions for independent trials and hypergeometric distributions for sampling without replacement.

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Question

Quick-Fire Probability (CodeSignal-style)

Context: Answer the following independent probability questions, using binomial (independent trials) and hypergeometric (sampling without replacement) rules.

Questions

You flip a fair coin three times. What is the probability of getting exactly two heads?
A bag contains 4 red and 6 blue balls (10 total). You draw two balls without replacement. What is the probability that both are red?

Calculate Probability of Heads and Red Balls Drawing

Quick-Fire Probability (CodeSignal-style)

Questions

Solution

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