Question

The probability distribution of $x$ is

X	0	1	2	3
p (x)	0.2	k	k	2 k

Find the value of k

• A. 0.2
• B. 0.3
• C. 0.4
• D. 0.1

Answer 1

Answer: (A)

We know that,
$\Sigma P(X)=1$
$\Rightarrow 0.2+k+k+2k=1$
$\Rightarrow 4k=0.8$
$\therefore k=0.2$