Question

A random variable X has the following probability distribution:
x
0 1 3 4 5 6 7
P X x ( ) 
0
k 2k 3k
2
k
2
2k
2
7k k 
A. Find k.
2
B. Evaluate
P X( 6).

Answer 1

Answer:

please check the attached image.

Also, for finding P(x=6) put k=1/10 in 2k^2.