Hard Difficulty
Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.
Statistics question
Statistics questions assess your understanding of data analysis principles. Show your knowledge of probability, statistical inference, experimental design, and how you apply quantitative methods to interpret data and draw valid conclusions.
Here's a Hint
First explain how to generate Bernoulli random variables in NumPy before addressing the column normalization requirement and potential edge cases like zero-sum columns.
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