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?