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Explain hypothesis testing: null/alternative, p-value, Type I/II errors, and choosing a test.

Hypothesis testing underlies every experiment, and the signal is interpreting the p-value correctly (it trips most people) and picking the right test. Here is the rigorous, plain-language answer.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Hypothesis testing underlies every experiment, and the signal is interpreting the p-value correctly (it trips most people) and picking the right test. Here is the rigorous, plain-language answer.

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