Answer:
The distribution is 
Solution:
As per the question:
Total no. of riders = n
Now, suppose the 
is the time between the departure of the rider i - 1 and i from the cable car.
where
= independent exponential random variable whose rate is 
The general form is given by:
(a) Now, the time distribution of the last rider is given as the sum total of the time of each rider:
Now, the sum of the exponential random variable with with rate is given by:
Answer:
Nico has 2 1/2 yards left
Step-by-step explanation:
D is right because there is not tire
We can solve this problem by using the distance formula. The distance formula is: 
We can now put in values and solve.
The answer is 900
900/90=10. Therefore 90/900=1/10
