In a binomial experiment with independent trials and success probability , what is the probability of obtaining at least one success?

Answer and explanation

Correct answer: A.

  1. Step 1: Use the complement rule: . Step 2. Failure probability is . Step 3. . Step 4. . **Answer: . Why not the others:** is the probability of zero successes; is the single-trial failure probability; is an arithmetic error.

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