Example 1:
0.2541, E(X)=2.4, SD(X)=1.3

Example 2:
0.03125

Example 3:
a. 0.1536
b. 0.9728

Example 4:
0.07203

Example 5:
3.33

Example 6:
a. 0.32805
b. 3

Example 7:
skewed to the right, symmetrical, left.

Example 8:
a. 0.096
b. 0.16

Example 9:
a. 0.01024
b. 0.5393

Example 10:
a. 0.8474
b. 0.0534

Example 11:
a. n=3
b. E(X)=80, SD(X)=6.9

Example 12:
a. 0.2814
b. 0.3553
c. 0.6366

Example 13:
It was solved in class.