If in a binomial distribution n = 1 then E(X) is:____________________?
Correct answer: B. p
- A. q
- B. p
- C. 0
- D. 1
Explanation
The binomial mean is E(X) = np. When n = 1, E(X) = 1 × p = p, which is also the mean of a Bernoulli variable.
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