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1.	Mark the correct alternative in the following question:Suppose a random variable X follows the binomial distribution with parameters n and p, where 0 < p < 1. If PX=rPX=n-r is independent of n and r, then p equalsa 12 b 13 c 15 d 17
Answer» Mark the correct alternative in the following question: Suppose a random variable X follows the binomial distribution with parameters n and p, where 0 < p < 1. If $\frac{P (X = r)}{P (X = n - r)}$ is independent of n and r, then p equals $(a) \frac{1}{2} (b) \frac{1}{3} (c) \frac{1}{5} (d) \frac{1}{7}$

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