For random variable X from a binomial random variable with parameters N and p, we can approximate a probability such as P(X 2) with a normal distribution provided _______.
Correct Answer: C
To approximate a binomial probability such as P(X 2) with a normal distribution we must have Np > 5 and N(1 - p) > 5. Also, we can improve the approximation by making an adjustment for continuity. For P(X > 2) where x is binomial we would find P(X > 2.5) where x is normal.
