Answer:


Step-by-step explanation:
Given


Solving (a): The mean
The mean of a uniform distribution is:

This gives:



Solving (b): The standard deviation
The standard deviation is:

This gives:





If the building is rectangle then no is not ant to top is bigger then no and if the bottom is bigger then yes
The answer is:
2((4^2)^-1)
= 2 * 16^-1
= 2 * 1/16
= 2/16
Answer = 1/8 (Decimal is 0.125)