Random Variables
Interactive practice questions
The probability function for a uniform discrete random variable is given below:
| $P$P$($($X=x$X=x$)$) | $=$= |  |
$k$k; $x=1,2,3,4$x=1,2,3,4 |
| $0$0, for all other values of $x$x |
a
Determine the value of $k$k.
b
Calculate $P$P$($($X<3$X<3$)$).
c
Calculate $P$P$($($X\ge2$X≥2 $|$| $X<4$X<4$)$).
d
Determine $m$m such that $P$P$($($X\ge m$X≥m$)=0.75$)=0.75.
Easy
4min
The probability function for a discrete random variable is given by:
Easy
8min
The probability function for a uniform discrete random variable is shown below.
Easy
1min
The probability function for a discrete random variable is given below.
Determine the value of $k$k.
Easy
3min
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