Question: Let $X$ be a discrete random variable with the pmf : $$ p(x)=frac{left(begin{array}{c} X-1 2. end{array} ight)}{2^{x}}, quad x=3,4,5,6,7, ldots $$ Find $P(X geq 6$.

Let $X$ be a discrete random variable with the pmf :

Let $X$ be a discrete random variable with the pmf : $$ p(x)=\frac{\left(\begin{array}{c} X-1 2. \end{array} ight)}{2^{x}}, \quad x=3,4,5,6,7, \ldots $$ Find $P(X \geq 6$. SP.SS. 394

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