Task $2$: The interarrival times for customers in a queue are as follows. Write Python code to compute

the probability mass function, expected value, and variance. Compute and plot the probability mass

function and cumulative distribution function.

Interarrival$\_$times $=[6,7,6,5,3,3,7,2,3,4,4,3,2,4,2,6,5,2,6,7]$

Task $3$: State various components of the following systems. Include entities, attributes, activities, events, and

states. Also, the systems should be characterized as deterministic or stochastic.

a$.$ Airport Check$-$in System

b$.$ Online Shopping System