To find mean, standard deviation and expected value.
1) Work out the MEAN and STANDARD DEVIATION for the distribution below:
X
|
0
|
1
|
2
|
3
|
4
|
P(X)
|
0.24
|
0.41
|
0.26
|
0.08
|
0.01
|
2) In a particular game a person wins $1 if they roll a 2 or a 6 on a regular cube die. The win zero (0) if they roll an off number - they win $10 if they roll a 4. What is the expected value of the roll?