A probability density function is given by $$P\left( x \right) = K\exp \left( { - \frac{{{x^2}}}{2}} \right),\, - \infty < x < \infty $$
The value of K should be
A. $$\frac{1}{{\sqrt {2\pi } }}$$
B. $$\sqrt {\frac{2}{\pi }} $$
C. $$\frac{1}{2}\sqrt \pi $$
D. $$\frac{1}{{\pi \sqrt 2 }}$$
Answer: Option A
This Question Belongs to Electronics And Communications Engineering >> Communication Systems
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